Arenac County, MI — Planting Guide
Arenac County is in USDA Zone 5a. The average last spring frost is May 12 and the first fall frost is October 6, giving you a growing season of approximately 147 days.
At an elevation of 1,015 ft, Arenac County receives approximately 30.5 in of rainfall annually. Summer highs average 86°F with winter lows around 13°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 27 days year to year — ranging from April 27 in warm years to May 25 in cold years. The growing season is trending longer by about 0.68 days per decade. Arenac County scores 73/100 (Good) on the Microclimate Index.
🌡️ Zone
5a (-20°F to -15°F min)
❄️ Last Frost
May 12
🍂 First Frost
October 6
📅 Growing Season
147 days
⛰️ Elevation
1,015 ft
🌧️ Annual Rainfall
30.5 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.4 in | 8 days | — | None |
| Feb | 1.3 in | 7 days | — | None |
| Mar | 2.2 in | 10 days | — | None |
| Apr | 2.6 in | 9 days | 1.7 in | High |
| May | 3.9 in | 11 days | 0.4 in | Low |
| Jun | 3.9 in | 10 days | 0.4 in | Low |
| Jul | 3.6 in | 8 days | 0.7 in | Moderate |
| Aug | 3.2 in | 8 days | 1.1 in | Moderate |
| Sep | 2.6 in | 7 days | 1.7 in | High |
| Oct | 2.2 in | 8 days | 2.1 in | High |
| Nov | 2 in | 8 days | — | None |
| Dec | 1.7 in | 8 days | — | None |
Annual total: 30.6 in. Gardens typically need ~1 inch of water per week during the growing season. Months marked "None" for extra water are outside the active growing season for your zone — most gardens are dormant and don't need irrigation during those months.
Arenac County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-7.1
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 | Oct 21 | 149 days |
| Cautious | May 17 | Oct 13 | 149 days |
| Average year | May 12 | Oct 6 | 147 days |
| Optimistic | May 6 | Sep 30 | 147 days |
| Aggressive (risky) | Apr 27 | Sep 20 | 146 days |
Not very — frost dates can vary by ±27 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 longer (0.7 days/decade). Historical frost dates are still reliable for planning.
Gardening Difficulty Score
Arenac County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Arenac 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 Arenac County's climate and soil.
County Extension Office
Arenac 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 Arenac County
Finding local nurseries & garden centers in Arenac County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Arenac 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 Arenac County MI" or "garden center Arenac 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 Arenac County MI" or check your extension office and local parks department. Facebook groups like "Arenac 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
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
15.3 hours
Summer solstice daylight
Shortest Day
8.7 hours
Winter solstice daylight
Peak Sun Hours
9.9 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 | 9.1 hr | 3.8 hr | Short day |
| February | 10.2 hr | 4.5 hr | Short day |
| March | 11.6 hr | 5.6 hr | Short day |
| April | 13.2 hr | 6.9 hr | Neutral |
| May | 14.6 hr | 8.7 hr | Long day |
| June | 15.3 hr | 9.9 hr | Long day |
| July | 15 hr | 9.4 hr | Long day |
| August | 13.8 hr | 8.5 hr | Neutral |
| September | 12.3 hr | 7.4 hr | Neutral |
| October | 10.7 hr | 5.6 hr | Short day |
| November | 9.4 hr | 3.8 hr | Short day |
| December | 8.7 hr | 3.3 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jun through Sep.
Best Month to Compost
Jun
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 | 24°F | 31°F | ❄️ Dormant | ~36 weeks |
| Feb | 23°F | 30°F | ❄️ Dormant | ~36 weeks |
| Mar | 33°F | 36°F | ❄️ Dormant | ~36 weeks |
| Apr | 44°F | 44°F | 🐢 Slow | ~24 weeks |
| May | 60°F | 55°F | ♻️ Active | ~14 weeks |
| Jun | 70°F | 64°F | 🔥 Peak | ~8 weeks |
| Jul | 78°F | 70°F | 🔥 Peak | ~8 weeks |
| Aug | 78°F | 72°F | 🔥 Peak | ~8 weeks |
| Sep | 70°F | 68°F | 🔥 Peak | ~8 weeks |
| Oct | 57°F | 60°F | ♻️ Active | ~14 weeks |
| Nov | 42°F | 49°F | 🐢 Slow | ~24 weeks |
| Dec | 30°F | 39°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 Arenac County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 5 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | May, Jun, Jul, Aug |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash bugs | Moderate | Jun, Jul, Aug |
| Tomato hornworms | Moderate | Jul, Aug |
| Cabbage loopers | Low | May, Jun, Jul, Aug |
Organic pest management tips
- Maintain healthy soil with regular compost additions to build natural pest resistance
- Practice crop rotation annually to break pest cycles
- Encourage beneficial insects with flowering herbs like dill, fennel, and yarrow
Cover Crops for Arenac County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 11 | Apr 28 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Aug 19 | Apr 28 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 14 | Apr 28 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 23 | Apr 28 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 28 | Apr 28 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 10 | Apr 28 | — | Erosion control, weed suppression, good biomass |
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 15 | Aug 4 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 22 | Aug 4 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 17 | Aug 4 | ✓ 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 8 | Sep 8 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Wind & Microclimate
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: 10 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
7.3/10
Strongly recommended — a windbreak (fence, hedge, or row of tall crops like corn or sunflowers) will significantly improve garden yields.
Frost Pocket Risk
Low
Relatively flat terrain (295 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
15,251 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 1,750 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 30.6 inches of rain per year
- A 1,000 sq ft roof can collect roughly 15,251 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 Arenac County
Soil Type
Silt Loam
Soil pH 6.2–7.1 · 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. (30.5 in. annual rainfall)
Season Tips
147-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.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
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 Arenac County
106 vegetables that grow well in Zone 5a with planting dates for Arenac County.
Show all 106 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 7 | May 19 | May 26 | Aug 18 – Sep 22 | 80–100 |
| Amaranth | Mar 17 | May 19 | May 26 | Aug 25 – Oct 13 | 90–120 |
| Arugula | Apr 7 | Apr 28 | May 12 | Jun 16 – Aug 18 | 30–50 |
| Asparagus | — | — | May 26 | — | 730–1095 |
| Beets | — | Apr 28 | — | Jun 23 – Jul 21 | 50–70 |
| Belgian Endive | Apr 7 | Apr 28 | May 12 | Sep 1 – Oct 27 | 110–150 |
| Bitter Melon | Mar 17 | May 19 | May 26 | Jul 28 – Sep 8 | 60–90 |
| Black Beans | — | May 19 | — | Aug 18 – Oct 6 | 90–120 |
| Bok Choy | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 28 | 40–60 |
| Broccoli | Apr 7 | Apr 28 | May 12 | Jul 14 – Aug 25 | 60–90 |
| Broccoli Rabe | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 28 | 40–60 |
| Brussels Sprouts | Apr 7 | Apr 28 | May 12 | Aug 11 – Oct 6 | 90–130 |
| Butternut Squash | Apr 7 | May 19 | May 26 | Aug 25 – Sep 29 | 85–110 |
| Cabbage | Apr 7 | Apr 28 | May 12 | Jul 14 – Sep 8 | 60–100 |
| Calabash | Mar 17 | May 19 | May 26 | Aug 18 – Oct 13 | 80–120 |
| Carrots | — | Apr 28 | — | Jun 30 – Aug 4 | 60–80 |
| Cauliflower | Apr 7 | Apr 28 | May 12 | Jul 7 – Sep 8 | 55–100 |
| Celeriac | Apr 7 | Apr 28 | May 12 | Aug 25 – Sep 29 | 100–120 |
| Celery | Apr 7 | Apr 28 | May 12 | Aug 4 – Sep 29 | 80–120 |
| Celtuce | Apr 7 | Apr 28 | May 12 | Jul 14 – Aug 25 | 60–90 |
| Chard | Apr 7 | Apr 28 | May 12 | Jul 7 – Aug 25 | 50–60 |
| Chickpeas | Apr 7 | Apr 28 | May 12 | Aug 4 – Sep 15 | 80–110 |
| Chicory | Apr 7 | Apr 28 | May 12 | Jul 14 – Aug 25 | 60–85 |
| Chinese Cabbage | Apr 7 | Apr 28 | May 12 | Jul 7 – Aug 4 | 50–70 |
| Christmas Lima Beans | Mar 17 | May 19 | May 26 | Aug 18 – Sep 22 | 80–100 |
| Collard Greens | Apr 7 | Apr 28 | May 12 | Jul 7 – Sep 8 | 55–75 |
| Corn | — | May 19 | — | Jul 21 – Sep 15 | 60–100 |
| Cowpeas | — | May 19 | — | Jul 21 – Sep 1 | 60–90 |
| Cress | Apr 7 | Apr 28 | May 12 | May 26 – Jun 16 | 14–21 |
| Crookneck Squash | Apr 7 | May 19 | May 26 | Jul 14 – Aug 11 | 45–60 |
| Crosne | — | Apr 28 | — | Sep 29 – Oct 13 | 150–200 |
| Cucumber | Apr 7 | May 19 | May 26 | Jul 21 – Sep 15 | 50–70 |
| Daikon | — | Apr 28 | — | Jun 23 – Jul 21 | 50–70 |
| Delicata Squash | Apr 7 | May 19 | May 26 | Aug 18 – Sep 22 | 80–100 |
| Edamame | — | May 19 | — | Aug 4 – Sep 15 | 75–100 |
| Eggplant | Mar 3 | May 19 | May 26 | Aug 4 – Oct 6 | 65–85 |
| Endive | Apr 7 | Apr 28 | May 12 | Jun 30 – Aug 4 | 45–65 |
| Escarole | Apr 7 | Apr 28 | May 12 | Jul 7 – Aug 4 | 50–70 |
| Fava Beans | Apr 7 | Apr 28 | May 12 | Jul 28 – Sep 8 | 75–100 |
| Fennel | Mar 17 | May 19 | May 26 | Jul 28 – Sep 8 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 19 | — | Jul 14 – Sep 8 | 50–65 |
| Horseradish | — | — | May 26 | Sep 29 – Nov 10 | 120–180 |
| Hot Peppers | Mar 3 | May 19 | May 26 | Aug 4 – Nov 10 | 70–120 |
| Hubbard Squash | Apr 7 | May 19 | May 26 | Sep 8 – Oct 13 | 100–120 |
| Kabocha | Apr 7 | May 19 | May 26 | Aug 25 – Sep 22 | 85–100 |
| Kai Lan | Apr 7 | Apr 28 | May 12 | Jun 30 – Jul 28 | 45–60 |
| Kale | Apr 7 | Apr 28 | May 12 | Jul 7 – Sep 1 | 50–70 |
| Kidney Beans | — | May 19 | — | Aug 18 – Sep 22 | 85–110 |
| Kohlrabi | Apr 7 | Apr 28 | May 12 | Jun 30 – Aug 4 | 45–65 |
| Komatsuna | Apr 7 | Apr 28 | May 12 | Jun 16 – Jul 21 | 35–50 |
| Leeks | Apr 7 | Apr 28 | May 12 | Aug 11 – Oct 27 | 90–150 |
| Lentils | Apr 7 | Apr 28 | May 12 | Aug 4 – Sep 15 | 80–110 |
| Lettuce | Apr 7 | Apr 28 | May 12 | Jun 16 – Aug 25 | 30–60 |
| Lima Beans | — | May 19 | — | Jul 21 – Sep 1 | 60–90 |
| Mache | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 28 | 40–60 |
| Melon | Apr 7 | May 19 | May 26 | Aug 4 – Sep 22 | 70–100 |
| Microgreens | Apr 7 | Apr 28 | May 12 | May 19 – Jun 16 | 7–21 |
| Mitsuba | Apr 7 | Apr 28 | May 5 | Jun 30 – Aug 25 | 50–70 |
| Mizuna | Apr 7 | Apr 28 | May 12 | Jun 16 – Jul 14 | 30–45 |
| Mustard Greens | Apr 7 | Apr 28 | May 12 | Jun 16 – Aug 18 | 30–50 |
| Napa Cabbage | Apr 7 | Apr 28 | May 12 | Jul 7 – Aug 11 | 55–75 |
| New Zealand Spinach | Mar 17 | May 19 | May 26 | Jul 21 – Aug 18 | 55–70 |
| Okra | Mar 17 | May 19 | May 26 | Jul 21 – Sep 15 | 50–65 |
| Onion | Apr 7 | Apr 28 | May 12 | Aug 11 – Sep 29 | 90–120 |
| Pac Choi | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 21 | 40–55 |
| Parsnip | — | Apr 28 | — | Aug 11 – Sep 22 | 100–130 |
| Patty Pan Squash | Apr 7 | May 19 | May 26 | Jul 14 – Aug 11 | 45–60 |
| Peas | Apr 7 | Apr 28 | May 12 | Jul 7 – Sep 1 | 55–70 |
| Peppers | Mar 3 | May 19 | May 26 | Jul 28 – Oct 6 | 60–90 |
| Pole Beans | Mar 17 | May 19 | May 26 | Jul 21 – Sep 15 | 55–70 |
| Potatoes | Mar 17 | May 19 | May 26 | Aug 4 – Oct 13 | 70–120 |
| Pumpkin | Apr 7 | May 19 | May 26 | Aug 25 – Oct 13 | 85–120 |
| Purslane | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 28 | 40–60 |
| Radicchio | Apr 7 | Apr 28 | May 12 | Jul 14 – Aug 18 | 60–80 |
| Radish | — | Apr 28 | — | May 26 – Jun 16 | 22–35 |
| Rhubarb | — | — | Jun 2 | — | 365–730 |
| Romanesco | Apr 7 | Apr 28 | May 12 | Jul 28 – Sep 8 | 75–100 |
| Rutabaga | — | Apr 28 | — | Jul 21 – Aug 25 | 80–100 |
| Salsify | — | Apr 28 | — | Aug 11 – Sep 22 | 100–130 |
| Savoy Cabbage | Apr 7 | Apr 28 | May 12 | Jul 21 – Sep 15 | 70–110 |
| Scallions | Apr 7 | Apr 28 | May 12 | Jul 7 – Aug 4 | 50–70 |
| Scarlet Runner Beans | Mar 17 | May 19 | May 26 | Jul 28 – Sep 1 | 60–80 |
| Shallot | Apr 7 | Apr 28 | May 12 | Aug 11 – Sep 29 | 90–120 |
| Shiso | Mar 24 | May 19 | May 26 | Jul 21 – Sep 15 | 50–70 |
| Snap Peas | Mar 17 | May 19 | May 26 | Jul 21 – Sep 15 | 55–70 |
| Snow Peas | Apr 7 | Apr 28 | May 12 | Jul 7 – Sep 1 | 50–65 |
| Soybeans | — | May 19 | — | Aug 11 – Oct 6 | 80–120 |
| Spaghetti Squash | Apr 7 | May 19 | May 26 | Aug 25 – Sep 22 | 85–100 |
| Spinach | Apr 7 | Apr 28 | May 12 | Jun 16 – Aug 18 | 35–50 |
| Squash (Summer) | Apr 7 | May 19 | May 26 | Jul 14 – Sep 15 | 45–65 |
| Squash (Winter) | Apr 7 | May 19 | May 26 | Aug 18 – Oct 13 | 80–120 |
| Sunchoke | — | — | May 26 | Sep 15 – Nov 10 | 110–150 |
| Sunflower | Mar 17 | May 19 | May 26 | Aug 4 – Sep 22 | 70–100 |
| Sweet Corn | — | May 19 | — | Jul 21 – Sep 1 | 60–90 |
| Sweet Potatoes | Mar 17 | May 19 | May 26 | Aug 25 – Oct 13 | 90–120 |
| Tatsoi | Apr 7 | Apr 28 | May 12 | Jun 16 – Jul 21 | 35–50 |
| Tomatillo | Mar 17 | May 19 | May 26 | Jul 28 – Oct 6 | 60–85 |
| Tomatoes | Mar 17 | May 19 | May 26 | Jul 28 – Oct 6 | 60–85 |
| Turnip | — | Apr 28 | — | Jun 9 – Jul 14 | 40–60 |
| Watercress | Apr 7 | Apr 28 | May 12 | Jun 23 – Jul 28 | 40–60 |
| Watermelon | Apr 7 | May 19 | May 26 | Aug 4 – Sep 22 | 70–100 |
| Wax Beans | — | May 19 | — | Jul 14 – Sep 8 | 50–65 |
| Winter Melon | Mar 17 | May 19 | May 26 | Aug 25 – Oct 13 | 90–120 |
| Yard Long Beans | Mar 17 | May 19 | May 26 | Jul 21 – Sep 1 | 55–80 |
| Zucchini | Apr 7 | May 19 | May 26 | Jul 14 – Sep 8 | 45–60 |
🍓 Fruits to Grow in Arenac County
27 fruits that grow well in Zone 5a with planting dates for Arenac County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 2 | Sep 1 – Nov 17 | 90–180 |
| Aronia | — | — | Jun 2 | — | 730–1095 |
| Blackberries | — | — | Jun 2 | — | 365–730 |
| Blueberries | — | — | Jun 2 | — | 730–1095 |
| Boysenberries | — | — | Jun 2 | — | 365–730 |
| Cantaloupe | — | — | Jun 2 | Aug 11 – Sep 15 | 70–90 |
| Che Fruit | — | — | Jun 2 | — | 1095–1825 |
| Cranberries | — | — | Jun 2 | — | 730–1095 |
| Currants | — | — | Jun 2 | — | 730–1095 |
| Elderberries | — | — | Jun 2 | — | 730–1095 |
| Goji Berries | — | — | Jun 2 | — | 730–1095 |
| Gooseberries | — | — | Jun 2 | — | 730–1095 |
| Grapes | — | — | Jun 2 | — | 730–1095 |
| Ground Cherry | — | — | Jun 2 | Aug 11 – Oct 6 | 65–80 |
| Hardy Kiwi | — | — | Jun 2 | — | 1095–1825 |
| Haskaps | — | — | Jun 2 | — | 730–1095 |
| Honeydew | — | — | Jun 2 | Aug 25 – Oct 6 | 80–110 |
| Jostaberry | — | — | Jun 2 | — | 730–1095 |
| Lingonberries | — | — | Jun 2 | — | 730–1095 |
| Medlar | — | — | Jun 2 | — | 1095–1825 |
| Mulberries | — | — | Jun 2 | — | 730–1825 |
| Pawpaw | — | — | Jun 2 | — | 1095–2555 |
| Persimmon | — | — | Jun 2 | — | 1095–2555 |
| Quince | — | — | Jun 2 | — | 1095–1825 |
| Raspberries | — | — | Jun 2 | — | 365–730 |
| Serviceberries | — | — | Jun 2 | — | 730–1095 |
| Strawberries | — | — | Jun 2 | Sep 1 – Nov 17 | 90–365 |
🌿 Herbs to Grow in Arenac County
37 herbs that grow well in Zone 5a with planting dates for Arenac County.
Show all 37 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 7 | Apr 28 | May 5 | — | 365–730 |
| Anise | Apr 7 | Apr 28 | May 5 | Aug 4 – Oct 20 | 90–120 |
| Basil | Mar 24 | May 19 | May 26 | Jul 21 – Sep 22 | 50–75 |
| Bee Balm | — | — | May 19 | Aug 18 – Nov 3 | 90–120 |
| Borage | Apr 7 | Apr 28 | May 5 | Jun 30 – Aug 18 | 50–60 |
| Caraway | Apr 7 | Apr 28 | May 5 | — | 365–450 |
| Catnip | — | — | May 19 | Jul 21 – Sep 22 | 60–80 |
| Chamomile | Apr 7 | Apr 28 | May 5 | Jul 7 – Sep 15 | 60–90 |
| Chervil | Apr 7 | Apr 28 | May 5 | Jun 16 – Aug 18 | 40–60 |
| Chives | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Cilantro | Apr 7 | Apr 28 | May 5 | Jun 16 – Aug 18 | 40–60 |
| Comfrey | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Cumin | Apr 7 | Apr 28 | May 5 | Aug 18 – Oct 20 | 100–120 |
| Dill | Apr 7 | Apr 28 | May 5 | Jun 16 – Aug 18 | 40–60 |
| Echinacea | — | — | May 19 | Sep 22 – Nov 3 | 120–180 |
| Epazote | Mar 24 | May 19 | May 26 | Jul 14 – Sep 8 | 45–60 |
| Fennel (herb) | Apr 7 | Apr 28 | May 5 | Jul 7 – Sep 15 | 60–90 |
| Feverfew | — | — | May 19 | Aug 18 – Nov 3 | 90–120 |
| Garlic Chives | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Horehound | — | — | May 19 | Aug 4 – Sep 29 | 75–90 |
| Hyssop | — | — | May 19 | Jul 28 – Sep 29 | 70–90 |
| Lavender | — | — | May 19 | Aug 18 – Nov 3 | 90–200 |
| Lemon Balm | — | — | May 19 | Jul 21 – Sep 8 | 60–70 |
| Lemon Thyme | — | — | May 19 | Jul 28 – Sep 29 | 70–90 |
| Lovage | — | — | May 19 | Jul 28 – Sep 29 | 70–90 |
| Mint | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Oregano | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Parsley | Apr 7 | Apr 28 | May 5 | Jul 7 – Sep 8 | 60–80 |
| Rue | — | — | May 19 | Jul 28 – Sep 29 | 70–90 |
| Sage | — | — | May 19 | Aug 4 – Sep 29 | 75–90 |
| Savory | — | — | May 19 | Jul 14 – Sep 8 | 50–70 |
| Sorrel | Apr 7 | Apr 28 | May 5 | Jun 16 – Aug 18 | 40–60 |
| Tarragon | — | — | May 19 | Jul 21 – Sep 29 | 60–90 |
| Thai Basil | Mar 24 | May 19 | May 26 | Jul 21 – Sep 22 | 50–75 |
| Thyme | — | — | May 19 | Jul 28 – Sep 29 | 70–90 |
| Valerian | — | — | May 19 | Sep 22 – Nov 3 | 120–180 |
| Yarrow | — | — | May 19 | Aug 18 – Nov 3 | 90–120 |
Monthly Planting Guide for Arenac County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Arenac County.
Frequently Asked Questions
What planting zone is Arenac County, MI?
Arenac 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 Arenac County, MI?
Based on 31 years of NOAA weather station data, the median last spring frost in Arenac County falls around May 12. In 8 out of 10 years, last frost lands between April 27 and May 25 — a 27-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 Arenac County, MI?
The median first fall frost in Arenac County arrives around October 6. In cold years it can arrive as early as September 20; in mild years as late as October 21. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Arenac County?
Arenac County has a frost-free growing season of approximately 147 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost. Climate records show the growing season is trending longer by about 0.68 days per decade.
What is the soil like in Arenac County for gardening?
Arenac County has predominantly Silt Loam soil with a pH range of 6.2–7.1 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Arenac County?
Arenac County has commercial agriculture that includes Soybeans, Corn, Hay, Oats. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Arenac County a good location for home gardening?
Arenac 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.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Arenac County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.
