Alger County, MI — Planting Guide
July to-do list for Alger County, Michigan
July is a pivotal month for Alger County, Michigan gardens. Focus on these tasks first and you'll set up the rest of the season for success.
-
Get peppers, pole beans, and tomatoes seeds going inside
Label every cell. You will absolutely forget which is which otherwise.
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Basket week: basil, carrots, and cucumber
If you can't use it all right away, check the food-preservation section of your planner.
Before August arrives, get these ready
- First harvests: basil, carrots, and cucumber
- Fall sowing: carrots, kale, and lettuce
Alger County is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 16, giving you a growing season of approximately 159 days.
At an elevation of 1,014 ft, Alger County receives approximately 40.9 in of rainfall annually. Summer highs average 80°F with winter lows around 4°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 32 days year to year — ranging from April 23 in warm years to May 25 in cold years. The growing season is trending shorter by about 0.62 days per decade. Alger County scores 73/100 (Good) on the Microclimate Index.
🌡️ Zone
5a (-20°F to -15°F min)
❄️ Last Frost
May 10
🍂 First Frost
October 16
📅 Growing Season
159 days
⛰️ Elevation
1,014 ft
🌧️ Annual Rainfall
40.9 in
Monthly Watering Calendar for Alger County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
The practical takeaway: Plants need different amounts of water at different growth stages — heavy at flowering and fruit-set, lighter at establishment. Alger County's 41" annual rainfall is your starting math; the timing tells you when natural rain will cover you and when you need to step in.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 2 in | 8 days | — | None |
| Feb | 2 in | 7 days | — | None |
| Mar | 2.5 in | 8 days | — | None |
| Apr | 3.5 in | 10 days | 0.8 in | Moderate |
| May | 4.3 in | 12 days | — | Low |
| Jun | 5 in | 10 days | — | Low |
| Jul | 5 in | 7 days | — | Low |
| Aug | 4.7 in | 7 days | — | Low |
| Sep | 3.9 in | 8 days | 0.4 in | Low |
| Oct | 3 in | 6 days | 1.3 in | Moderate |
| Nov | 2.9 in | 7 days | — | None |
| Dec | 2.1 in | 8 days | — | None |
Annual total: 40.9 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Alger County Soil Profile
Soil Type
Silt Loam
Soil pH
6.3-7.1
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | May 25 | Nov 2 | 161 days |
| Cautious | May 16 | Oct 25 | 162 days |
| Average year | May 10 | Oct 16 | 159 days |
| Optimistic | May 2 | Oct 8 | 159 days |
| Aggressive (risky) | Apr 23 | Oct 2 | 162 days |
Not very — frost dates can vary by ±32 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Slightly — seasons are trending a bit shorter (0.6 days/decade). Stay conservative with planting dates.
Gardening Difficulty Score
Alger County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Alger County
Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Alger County's climate and soil.
County Extension Office
Alger County Michigan State University Extension Extension Office
Phone: 517-355-0240
Visit Extension Office Website →
Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.
Master Gardener Program
Free gardening help from trained volunteers
Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.
Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.
Soil Testing
Available through your extension office
Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.
Services Available in Alger County
Finding local nurseries & garden centers in Alger County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Alger County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.
How to Find Them
Search for "nurseries near Alger County MI" or "garden center Alger County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.
Community gardens & gardening groups
Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Alger County MI" or check your extension office and local parks department. Facebook groups like "Alger County Gardeners" or "Michigan Gardening" are also excellent for local advice and plant swaps.
What to Plant After Your Harvest
After your first crops finish, use the remaining frost-free days to grow a second round.
Show 6 more succession options
Sunlight & Day Length in Alger County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
What this means for you: A 14-hour day in June produces dramatically more photosynthesis than a 10-hour day in November. Alger County's seasonal swing determines which crops can pack growth into spring vs. limp through fall.
Longest Day
15.6 hours
Summer solstice daylight
Shortest Day
8.4 hours
Winter solstice daylight
Peak Sun Hours
9.5 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 8.8 hr | 3.7 hr | Short day |
| February | 10.1 hr | 4.5 hr | Short day |
| March | 11.6 hr | 5.7 hr | Short day |
| April | 13.3 hr | 7.1 hr | Neutral |
| May | 14.8 hr | 8.2 hr | Long day |
| June | 15.6 hr | 9.4 hr | Long day |
| July | 15.3 hr | 9.5 hr | Long day |
| August | 14 hr | 8.9 hr | Long day |
| September | 12.3 hr | 6.8 hr | Neutral |
| October | 10.6 hr | 5.8 hr | Short day |
| November | 9.1 hr | 3.6 hr | Short day |
| December | 8.4 hr | 3.2 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Alger County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
The practical takeaway: Air temperature lies. Your air can be 70°F in April but the soil 4 inches down is still 50°F — too cold for tomatoes or peppers to root properly. Alger County's soil temperature curve tells you the real planting window. A $5 soil thermometer pays for itself in one season.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jun through Sep.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 16°F | 24°F | ❄️ Dormant | ~36 weeks |
| Feb | 17°F | 23°F | ❄️ Dormant | ~36 weeks |
| Mar | 24°F | 28°F | ❄️ Dormant | ~36 weeks |
| Apr | 39°F | 40°F | ❄️ Dormant | ~36 weeks |
| May | 53°F | 52°F | ♻️ Active | ~14 weeks |
| Jun | 64°F | 59°F | ♻️ Active | ~14 weeks |
| Jul | 73°F | 65°F | 🔥 Peak | ~8 weeks |
| Aug | 74°F | 67°F | 🔥 Peak | ~8 weeks |
| Sep | 66°F | 65°F | 🔥 Peak | ~8 weeks |
| Oct | 51°F | 53°F | ♻️ Active | ~14 weeks |
| Nov | 37°F | 42°F | ❄️ Dormant | ~36 weeks |
| Dec | 21°F | 32°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Alger County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
The practical takeaway: In Alger County's climate, pest pressure shapes which crops are easy and which are heartbreak. Tomatoes are easy in dry mountain air, hard in humid coast — same plant, completely different gardening experience.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Moderate — watch for mildew and blight during wet periods.
Seasonal Risk
View 5 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | May, Jun, Jul, Aug |
| Cabbage worms | Moderate | Jun, Jul, Aug |
| Colorado potato beetle | Low | Jun, Jul |
| Flea beetles | Low | May, Jun, Jul |
| Slugs | Low | May, Jun, Jul, Aug, Sep |
Organic pest management tips
- Use row covers on susceptible crops during peak pest months
- Apply neem oil preventatively every 7-14 days during active pest season
- Interplant with strong-scented herbs (basil, marigold) to confuse pests
- Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
- Practice crop rotation — never plant the same family in the same spot within 3 years
Cover Crops for Alger County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
The practical takeaway: Bare soil is wasted soil — it loses nutrients to rain, dries out, compacts, and gets taken over by weeds. Cover crops (clovers, ryegrass, vetch, peas) are the "between seasons" trick that makes soil better every year. In Alger County, you can fit a cover crop into the gaps.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 17 | Aug 7 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 13 | Aug 21 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | Jun 2 | Sep 25 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (5 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Daikon radish | Sep 3 | Apr 19 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 31 | Apr 26 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 1 | Apr 19 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 19 | Apr 26 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 13 | Apr 26 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Alger County
The practical takeaway: Wind dries soil, knocks over young transplants, and disrupts pollination for bees and butterflies. Alger County averages 9.4 mph — above 10 mph means windbreaks (shrubs, fences, taller crops to windward), staked tomatoes from day one, and an extra round of watering during dry windy spells. Lower wind = lower water bills and fewer broken stems.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 13 mph Summer: 9 mph
Fall: 11 mph Winter: 13 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
6.6/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (131 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Alger County
How much water you can collect, when to collect it, and what size system you need for your garden.
The practical takeaway: A gravity-fed rain barrel ($75) is the easy entry. A larger cistern ($500-1500) covers a whole growing season. Alger County's 41" annual rainfall determines whether the larger system is overkill or essential.
Annual Collection
20,384 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 1,250 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
May, Jun, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jan, Feb, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 40.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 20,384 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Jan, Feb, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Alger County
Soil Type
Silt Loam
Soil pH 6.3–7.1 · Excessively Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (40.9 in. annual rainfall)
Season Tips
159-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Alger County
105 vegetables that grow well in Zone 5a with planting dates for Alger County.
Show all 105 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 5 | May 17 | May 24 | — | Aug 16 – Sep 20 | 80–100 |
| Amaranth | Mar 15 | May 17 | May 24 | — | Aug 23 – Oct 11 | 90–120 |
| Arugula | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Aug 16 | 30–50 |
| Asparagus | — | — | May 24 | — | — | 730–1095 |
| Beets | — | Apr 26 | — | Aug 7 | Jun 21 – Jul 19 | 50–70 |
| Belgian Endive | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 30 – Oct 25 | 110–150 |
| Bitter Melon | Mar 15 | May 17 | May 24 | — | Jul 26 – Sep 6 | 60–90 |
| Black Beans | — | May 17 | — | — | Aug 16 – Oct 4 | 90–120 |
| Bok Choy | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 26 | 40–60 |
| Broccoli | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 12 – Aug 23 | 60–90 |
| Broccoli Rabe | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 26 | 40–60 |
| Brussels Sprouts | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 9 – Oct 4 | 90–130 |
| Butternut Squash | Apr 5 | May 17 | May 24 | — | Aug 23 – Sep 27 | 85–110 |
| Cabbage | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 12 – Sep 6 | 60–100 |
| Calabash | Mar 15 | May 17 | May 24 | — | Aug 16 – Oct 11 | 80–120 |
| Carrots | — | Apr 26 | — | Aug 7 | Jun 28 – Aug 2 | 60–80 |
| Cauliflower | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Sep 6 | 55–100 |
| Celeriac | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 23 – Sep 27 | 100–120 |
| Celery | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 2 – Sep 27 | 80–120 |
| Celtuce | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 12 – Aug 23 | 60–90 |
| Chard | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 23 | 50–60 |
| Chickpeas | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 2 – Sep 13 | 80–110 |
| Chicory | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 12 – Aug 23 | 60–85 |
| Chinese Cabbage | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 2 | 50–70 |
| Christmas Lima Beans | Mar 15 | May 17 | May 24 | — | Aug 16 – Sep 20 | 80–100 |
| Collard Greens | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Sep 6 | 55–75 |
| Corn | — | May 17 | — | — | Jul 19 – Sep 13 | 60–100 |
| Cowpeas | — | May 17 | — | — | Jul 19 – Aug 30 | 60–90 |
| Cress | Apr 5 | Apr 26 | May 10 | Aug 7 | May 24 – Jun 14 | 14–21 |
| Crookneck Squash | Apr 5 | May 17 | May 24 | — | Jul 12 – Aug 9 | 45–60 |
| Crosne | — | Apr 26 | — | Aug 7 | Sep 27 – Oct 11 | 150–200 |
| Cucumber | Apr 5 | May 17 | May 24 | — | Jul 19 – Sep 13 | 50–70 |
| Daikon | — | Apr 26 | — | Aug 7 | Jun 21 – Jul 19 | 50–70 |
| Delicata Squash | Apr 5 | May 17 | May 24 | — | Aug 16 – Sep 20 | 80–100 |
| Edamame | — | May 17 | — | — | Aug 2 – Sep 13 | 75–100 |
| Eggplant | Mar 1 | May 17 | May 24 | — | Aug 2 – Oct 4 | 65–85 |
| Endive | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 28 – Aug 2 | 45–65 |
| Escarole | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 2 | 50–70 |
| Fava Beans | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 26 – Sep 6 | 75–100 |
| Fennel | Mar 15 | May 17 | May 24 | — | Jul 26 – Sep 6 | 60–90 |
| Garlic | — | — | — | Sep 4 | Dec 4 – Feb 19 | 90–240 |
| Green Beans | — | May 17 | — | — | Jul 12 – Sep 6 | 50–65 |
| Horseradish | — | — | May 24 | — | Sep 27 – Nov 8 | 120–180 |
| Hot Peppers | Mar 1 | May 17 | May 24 | — | Aug 2 – Nov 8 | 70–120 |
| Hubbard Squash | Apr 5 | May 17 | May 24 | — | Sep 6 – Oct 11 | 100–120 |
| Kabocha | Apr 5 | May 17 | May 24 | — | Aug 23 – Sep 20 | 85–100 |
| Kai Lan | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 28 – Jul 26 | 45–60 |
| Kale | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 30 | 50–70 |
| Kidney Beans | — | May 17 | — | — | Aug 16 – Sep 20 | 85–110 |
| Kohlrabi | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 28 – Aug 2 | 45–65 |
| Komatsuna | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Jul 19 | 35–50 |
| Leeks | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 9 – Oct 25 | 90–150 |
| Lentils | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 2 – Sep 13 | 80–110 |
| Lettuce | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Aug 23 | 30–60 |
| Lima Beans | — | May 17 | — | — | Jul 19 – Aug 30 | 60–90 |
| Mache | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 26 | 40–60 |
| Melon | Apr 5 | May 17 | May 24 | — | Aug 2 – Sep 20 | 70–100 |
| Microgreens | Apr 5 | Apr 26 | May 10 | Aug 7 | May 17 – Jun 14 | 7–21 |
| Mitsuba | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 28 – Aug 23 | 50–70 |
| Mizuna | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Jul 12 | 30–45 |
| Mustard Greens | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Aug 16 | 30–50 |
| Napa Cabbage | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 9 | 55–75 |
| New Zealand Spinach | Mar 15 | May 17 | May 24 | — | Jul 19 – Aug 16 | 55–70 |
| Okra | Mar 15 | May 17 | May 24 | — | Jul 19 – Sep 13 | 50–65 |
| Onion | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 9 – Sep 27 | 90–120 |
| Pac Choi | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 19 | 40–55 |
| Parsnip | — | Apr 26 | — | Aug 7 | Aug 9 – Sep 20 | 100–130 |
| Patty Pan Squash | Apr 5 | May 17 | May 24 | — | Jul 12 – Aug 9 | 45–60 |
| Peas | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 30 | 55–70 |
| Peppers | Mar 1 | May 17 | May 24 | — | Jul 26 – Oct 4 | 60–90 |
| Pole Beans | Mar 15 | May 17 | May 24 | — | Jul 19 – Sep 13 | 55–70 |
| Potatoes | Mar 15 | May 17 | May 24 | — | Aug 2 – Oct 11 | 70–120 |
| Pumpkin | Apr 5 | May 17 | May 24 | — | Aug 23 – Oct 11 | 85–120 |
| Purslane | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 26 | 40–60 |
| Radicchio | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 12 – Aug 16 | 60–80 |
| Radish | — | Apr 26 | — | Aug 7 | May 24 – Jun 14 | 22–35 |
| Rhubarb | — | — | May 31 | — | — | 365–730 |
| Romanesco | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 26 – Sep 6 | 75–100 |
| Rutabaga | — | Apr 26 | — | Aug 7 | Jul 19 – Aug 23 | 80–100 |
| Salsify | — | Apr 26 | — | Aug 7 | Aug 9 – Sep 20 | 100–130 |
| Savoy Cabbage | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 19 – Sep 13 | 70–110 |
| Scallions | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 2 | 50–70 |
| Scarlet Runner Beans | Mar 15 | May 17 | May 24 | — | Jul 26 – Aug 30 | 60–80 |
| Shallot | Apr 5 | Apr 26 | May 10 | Aug 7 | Aug 9 – Sep 27 | 90–120 |
| Shiso | Mar 22 | May 17 | May 24 | — | Jul 19 – Sep 13 | 50–70 |
| Snap Peas | Mar 15 | May 17 | May 24 | — | Jul 19 – Sep 13 | 55–70 |
| Snow Peas | Apr 5 | Apr 26 | May 10 | Aug 7 | Jul 5 – Aug 30 | 50–65 |
| Soybeans | — | May 17 | — | — | Aug 9 – Oct 4 | 80–120 |
| Spaghetti Squash | Apr 5 | May 17 | May 24 | — | Aug 23 – Sep 20 | 85–100 |
| Spinach | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Aug 16 | 35–50 |
| Squash (Summer) | Apr 5 | May 17 | May 24 | — | Jul 12 – Sep 13 | 45–65 |
| Squash (Winter) | Apr 5 | May 17 | May 24 | — | Aug 16 – Oct 11 | 80–120 |
| Sunchoke | — | — | May 24 | — | Sep 13 – Nov 8 | 110–150 |
| Sweet Corn | — | May 17 | — | — | Jul 19 – Aug 30 | 60–90 |
| Sweet Potatoes | Mar 15 | May 17 | May 24 | — | Aug 23 – Oct 11 | 90–120 |
| Tatsoi | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 14 – Jul 19 | 35–50 |
| Tomatillo | Mar 15 | May 17 | May 24 | — | Jul 26 – Oct 4 | 60–85 |
| Tomatoes | Mar 15 | May 17 | May 24 | — | Jul 26 – Oct 4 | 60–85 |
| Turnip | — | Apr 26 | — | Aug 7 | Jun 7 – Jul 12 | 40–60 |
| Watercress | Apr 5 | Apr 26 | May 10 | Aug 7 | Jun 21 – Jul 26 | 40–60 |
| Watermelon | Apr 5 | May 17 | May 24 | — | Aug 2 – Sep 20 | 70–100 |
| Wax Beans | — | May 17 | — | — | Jul 12 – Sep 6 | 50–65 |
| Winter Melon | Mar 15 | May 17 | May 24 | — | Aug 23 – Oct 11 | 90–120 |
| Yard Long Beans | Mar 15 | May 17 | May 24 | — | Jul 19 – Aug 30 | 55–80 |
| Zucchini | Apr 5 | May 17 | May 24 | — | Jul 12 – Sep 6 | 45–60 |
🍓 Fruits to Grow in Alger County
27 fruits that grow well in Zone 5a with planting dates for Alger County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 31 | — | Aug 30 – Nov 15 | 90–180 |
| Aronia | — | — | May 31 | — | — | 730–1095 |
| Blackberries | — | — | May 31 | — | — | 365–730 |
| Blueberries | — | — | May 31 | — | — | 730–1095 |
| Boysenberries | — | — | May 31 | — | — | 365–730 |
| Cantaloupe | — | — | May 31 | — | Aug 9 – Sep 13 | 70–90 |
| Che Fruit | — | — | May 31 | — | — | 1095–1825 |
| Cranberries | — | — | May 31 | — | — | 730–1095 |
| Currants | — | — | May 31 | — | — | 730–1095 |
| Elderberries | — | — | May 31 | — | — | 730–1095 |
| Goji Berries | — | — | May 31 | — | — | 730–1095 |
| Gooseberries | — | — | May 31 | — | — | 730–1095 |
| Grapes | — | — | May 31 | — | — | 730–1095 |
| Ground Cherry | — | — | May 31 | — | Aug 9 – Oct 4 | 65–80 |
| Hardy Kiwi | — | — | May 31 | — | — | 1095–1825 |
| Haskaps | — | — | May 31 | — | — | 730–1095 |
| Honeydew | — | — | May 31 | — | Aug 23 – Oct 4 | 80–110 |
| Jostaberry | — | — | May 31 | — | — | 730–1095 |
| Lingonberries | — | — | May 31 | — | — | 730–1095 |
| Medlar | — | — | May 31 | — | — | 1095–1825 |
| Mulberries | — | — | May 31 | — | — | 730–1825 |
| Pawpaw | — | — | May 31 | — | — | 1095–2555 |
| Persimmon | — | — | May 31 | — | — | 1095–2555 |
| Quince | — | — | May 31 | — | — | 1095–1825 |
| Raspberries | — | — | May 31 | — | — | 365–730 |
| Serviceberries | — | — | May 31 | — | — | 730–1095 |
| Strawberries | — | — | May 31 | — | Aug 30 – Nov 15 | 90–365 |
🌿 Herbs to Grow in Alger County
34 herbs that grow well in Zone 5a with planting dates for Alger County.
Show all 34 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 5 | Apr 26 | May 3 | Aug 7 | — | 365–730 |
| Anise | Apr 5 | Apr 26 | May 3 | Aug 7 | Aug 2 – Oct 18 | 90–120 |
| Basil | Mar 22 | May 17 | May 24 | — | Jul 19 – Sep 20 | 50–75 |
| Bee Balm | — | — | May 17 | — | Aug 16 – Nov 1 | 90–120 |
| Borage | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 28 – Aug 16 | 50–60 |
| Caraway | Apr 5 | Apr 26 | May 3 | Aug 7 | — | 365–450 |
| Catnip | — | — | May 17 | — | Jul 19 – Sep 20 | 60–80 |
| Chamomile | Apr 5 | Apr 26 | May 3 | Aug 7 | Jul 5 – Sep 13 | 60–90 |
| Chervil | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 14 – Aug 16 | 40–60 |
| Chives | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Cilantro | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 14 – Aug 16 | 40–60 |
| Comfrey | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Cumin | Apr 5 | Apr 26 | May 3 | Aug 7 | Aug 16 – Oct 18 | 100–120 |
| Dill | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 14 – Aug 16 | 40–60 |
| Epazote | Mar 22 | May 17 | May 24 | — | Jul 12 – Sep 6 | 45–60 |
| Fennel (herb) | Apr 5 | Apr 26 | May 3 | Aug 7 | Jul 5 – Sep 13 | 60–90 |
| Feverfew | — | — | May 17 | — | Aug 16 – Nov 1 | 90–120 |
| Garlic Chives | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Horehound | — | — | May 17 | — | Aug 2 – Sep 27 | 75–90 |
| Hyssop | — | — | May 17 | — | Jul 26 – Sep 27 | 70–90 |
| Lemon Balm | — | — | May 17 | — | Jul 19 – Sep 6 | 60–70 |
| Lemon Thyme | — | — | May 17 | — | Jul 26 – Sep 27 | 70–90 |
| Lovage | — | — | May 17 | — | Jul 26 – Sep 27 | 70–90 |
| Mint | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Oregano | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Parsley | Apr 5 | Apr 26 | May 3 | Aug 7 | Jul 5 – Sep 6 | 60–80 |
| Rue | — | — | May 17 | — | Jul 26 – Sep 27 | 70–90 |
| Sage | — | — | May 17 | — | Aug 2 – Sep 27 | 75–90 |
| Savory | — | — | May 17 | — | Jul 12 – Sep 6 | 50–70 |
| Sorrel | Apr 5 | Apr 26 | May 3 | Aug 7 | Jun 14 – Aug 16 | 40–60 |
| Tarragon | — | — | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Thai Basil | Mar 22 | May 17 | May 24 | — | Jul 19 – Sep 20 | 50–75 |
| Thyme | — | — | May 17 | — | Jul 26 – Sep 27 | 70–90 |
| Valerian | — | — | May 17 | — | Sep 20 – Nov 1 | 120–180 |
🌸 Flowers to Grow in Alger County
51 flowers that grow well in Zone 5a with planting dates for Alger County.
Show all 51 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 22 | May 17 | May 17 | — | Jul 12 – Oct 4 | 60–75 |
| Alliums | — | — | — | Sep 4 | Oct 9 – Nov 6 | 28–42 |
| Anemones | Apr 12 | — | May 10 | — | Jun 21 – Jul 19 | 90–120 |
| Astilbe | Mar 8 | — | May 24 | — | Aug 9 – Oct 11 | 70–100 |
| Bachelor's Button | Mar 29 | Apr 19 | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Begonias | Mar 1 | — | May 17 | — | Jul 26 – Oct 18 | 70–90 |
| Black-eyed Susan | Mar 8 | May 10 | May 24 | — | Aug 9 – Nov 8 | 60–80 |
| Bleeding Hearts | Mar 8 | — | May 24 | — | Jul 19 – Aug 30 | 60–90 |
| Calendula | Mar 29 | Apr 19 | May 10 | — | Jun 28 – Sep 20 | 50–70 |
| Celosia | Apr 5 | May 24 | May 24 | — | Jul 26 – Oct 25 | 60–90 |
| Columbine | Mar 8 | May 24 | May 24 | — | Jul 19 – Aug 30 | 70–100 |
| Coreopsis | Mar 8 | May 17 | May 24 | — | Aug 2 – Nov 8 | 60–80 |
| Cosmos | Apr 12 | May 17 | May 17 | — | Jul 26 – Oct 18 | 60–90 |
| Crocus | — | — | — | Sep 4 | Jul 17 – Aug 7 | 10–20 |
| Daffodils | — | — | — | Sep 4 | Jul 24 – Aug 14 | 20–40 |
| Dahlias | Apr 12 | May 17 | May 17 | — | Aug 9 – Nov 1 | 70–120 |
| Daylily | Mar 8 | — | May 24 | — | Aug 16 – Nov 8 | 60–90 |
| Dianthus | Mar 8 | Apr 12 | Apr 26 | — | Jun 14 – Aug 30 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 8 | May 24 | May 24 | — | Aug 16 – Nov 8 | 70–90 |
| Foxglove | Mar 8 | May 24 | May 24 | — | Jul 19 – Aug 30 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 15 | May 24 | May 24 | — | Aug 2 – Nov 22 | 70–100 |
| Geraniums | Mar 1 | — | May 17 | — | Jul 26 – Oct 18 | 70–100 |
| Gladiolus | — | May 17 | May 17 | — | Aug 9 – Nov 1 | 70–100 |
| Hostas | Mar 1 | — | May 24 | — | Aug 16 – Nov 8 | 60–90 |
| Hyacinths | — | — | — | Sep 4 | Aug 14 – Sep 11 | 14–28 |
| Hydrangeas | Mar 1 | — | May 24 | — | Aug 9 – Oct 25 | 90–150 |
| Impatiens | Mar 15 | — | May 17 | — | Jul 26 – Oct 18 | 60–75 |
| Irises | — | Division | May 24 | — | Jul 19 – Aug 23 | 60–100 |
| Larkspur | — | Apr 12 | — | — | Jun 21 – Aug 16 | 60–90 |
| Lavender | Mar 1 | — | May 31 | — | Aug 9 – Sep 20 | 90–120 |
| Lilies | — | Division | May 24 | — | Aug 2 – Oct 25 | 70–120 |
| Lobelia | Mar 1 | — | May 3 | — | Jun 28 – Sep 6 | 70–80 |
| Lupine | Mar 8 | May 24 | May 24 | — | Jul 19 – Aug 30 | 75–100 |
| Marigolds | Mar 29 | May 17 | May 17 | — | Jul 12 – Oct 4 | 50–70 |
| Nasturtium | Apr 12 | May 17 | May 17 | — | Jul 12 – Oct 18 | 55–65 |
| Pansy | Mar 1 | — | May 10 | — | Jul 5 – Aug 30 | 70–90 |
| Peonies | — | Division | May 24 | — | Aug 2 – Sep 13 | 90–120 |
| Petunia | Mar 15 | — | May 17 | — | Jul 26 – Oct 18 | 70–90 |
| Phlox | Mar 8 | May 24 | May 24 | — | Aug 9 – Oct 25 | 80–110 |
| Portulaca | Apr 5 | May 24 | May 24 | — | Jul 12 – Oct 11 | 50–70 |
| Roses | Mar 1 | — | May 24 | — | Aug 9 – Nov 8 | 90–180 |
| Salvia | Mar 8 | — | May 17 | — | Jul 26 – Oct 18 | 70–90 |
| Sedum (Stonecrop) | Mar 8 | — | May 24 | — | Sep 20 – Nov 22 | 60–90 |
| Snapdragon | Mar 1 | Apr 26 | May 10 | — | Jul 19 – Sep 20 | 70–100 |
| Sunflower | Apr 19 | May 17 | May 17 | — | Aug 9 – Oct 18 | 70–100 |
| Sweet Alyssum | Mar 22 | Apr 26 | May 10 | — | Jun 21 – Aug 30 | 45–60 |
| Sweet Pea | Mar 29 | Apr 5 | May 10 | — | Jul 26 – Sep 27 | 65–85 |
| Tulips | — | — | — | Sep 4 | Aug 7 – Aug 28 | 15–30 |
| Vinca (Annual) | Feb 22 | — | May 24 | — | Aug 2 – Oct 18 | 70–90 |
| Yarrow | Mar 8 | May 10 | May 24 | — | Aug 2 – Nov 8 | 60–90 |
| Zinnia | Apr 12 | May 17 | May 17 | — | Jul 26 – Oct 18 | 60–70 |
Monthly Planting Guide for Alger County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Alger County.
Frequently Asked Questions
What planting zone is Alger County, MI?
Alger County is in USDA Hardiness Zone 5a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Alger County, MI?
Based on 31 years of NOAA weather station data, the median last spring frost in Alger County falls around May 10. In 8 out of 10 years, last frost lands between April 23 and May 25 — a 32-day window of variability. Use May 25 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Alger County, MI?
The median first fall frost in Alger County arrives around October 16. In cold years it can arrive as early as October 2; in mild years as late as November 2. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Alger County?
Alger County has a frost-free growing season of approximately 159 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending shorter by about 0.62 days per decade.
What is the soil like in Alger County for gardening?
Alger County has predominantly Silt Loam soil with a pH range of 6.3–7.1 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Alger County?
Alger County has commercial agriculture that includes Soybeans, Corn, Hay, Dairy, Oats. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Alger County a good location for home gardening?
Alger County scores 73/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.
Your Alger County Garden Planner — Free
A 22-page printable planner built for Alger County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log