Morrison County, MN — Planting Guide
Morrison County is in USDA Zone 4a. The average last spring frost is May 4 and the first fall frost is October 6, giving you a growing season of approximately 155 days.
At an elevation of 1,070 ft, Morrison County receives approximately 40 in of rainfall annually. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 29 days year to year — ranging from April 21 in warm years to May 20 in cold years. The growing season is trending shorter by about 0.72 days per decade. Morrison County scores 69/100 (Good) on the Microclimate Index.
🌡️ Zone
4a (-30°F to -25°F min)
❄️ Last Frost
May 4
🍂 First Frost
October 6
📅 Growing Season
155 days
⛰️ Elevation
1,070 ft
🌧️ Annual Rainfall
40 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 | 1.6 in | 7 days | — | None |
| Mar | 2.7 in | 9 days | — | None |
| Apr | 3.8 in | 9 days | 0.5 in | Low |
| May | 5 in | 11 days | — | Low |
| Jun | 5.5 in | 9 days | — | Low |
| Jul | 4 in | 9 days | 0.3 in | Low |
| Aug | 4.6 in | 7 days | — | Low |
| Sep | 3.6 in | 7 days | 0.7 in | Moderate |
| Oct | 3.1 in | 7 days | 1.2 in | Moderate |
| Nov | 2.7 in | 7 days | — | None |
| Dec | 1.9 in | 7 days | — | None |
Annual total: 39.9 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.
Morrison County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-7.1
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 20 | Oct 19 | 152 days |
| Cautious | May 12 | Oct 9 | 150 days |
| Average year | May 4 | Oct 6 | 155 days |
| Optimistic | Apr 27 | Oct 1 | 157 days |
| Aggressive (risky) | Apr 21 | Sep 21 | 153 days |
Not very — frost dates can vary by ±29 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 (0.7 days/decade). Stay conservative with planting dates.
Gardening Difficulty Score
Morrison County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Morrison 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 Morrison County's climate and soil.
County Extension Office
Morrison County University of Minnesota Extension Extension Office
Phone: 612-625-8173
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 Morrison County
Finding local nurseries & garden centers in Morrison County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Morrison 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 Morrison County MN" or "garden center Morrison 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 Morrison County MN" or check your extension office and local parks department. Facebook groups like "Morrison County Gardeners" or "Minnesota 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
15.5 hours
Summer solstice daylight
Shortest Day
8.5 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 | 8.8 hr | 3.3 hr | Short day |
| February | 10.1 hr | 4.5 hr | Short day |
| March | 11.6 hr | 5.4 hr | Short day |
| April | 13.3 hr | 7 hr | Neutral |
| May | 14.8 hr | 8.6 hr | Long day |
| June | 15.5 hr | 9.9 hr | Long day |
| July | 15.2 hr | 9.9 hr | Long day |
| August | 14 hr | 8.6 hr | Long day |
| September | 12.3 hr | 7.4 hr | Neutral |
| October | 10.7 hr | 5.6 hr | Short day |
| November | 9.2 hr | 3.8 hr | Short day |
| December | 8.5 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 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 | 12°F | 24°F | ❄️ Dormant | ~36 weeks |
| Feb | 15°F | 23°F | ❄️ Dormant | ~36 weeks |
| Mar | 26°F | 29°F | ❄️ Dormant | ~36 weeks |
| Apr | 41°F | 39°F | 🐢 Slow | ~24 weeks |
| May | 55°F | 50°F | ♻️ Active | ~14 weeks |
| Jun | 66°F | 58°F | 🔥 Peak | ~8 weeks |
| Jul | 71°F | 66°F | 🔥 Peak | ~8 weeks |
| Aug | 75°F | 67°F | 🔥 Peak | ~8 weeks |
| Sep | 66°F | 64°F | 🔥 Peak | ~8 weeks |
| Oct | 52°F | 53°F | ♻️ Active | ~14 weeks |
| Nov | 37°F | 42°F | ❄️ Dormant | ~36 weeks |
| Dec | 20°F | 30°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 Morrison 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
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 | Moderate | Jun, Jul |
| Flea beetles | Moderate | May, Jun, Jul |
| Slugs | Moderate | 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 Morrison County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 12 | Aug 4 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 5 | Jul 28 | ✓ 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 | May 26 | Sep 22 | — | 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 | Aug 12 | Apr 13 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 17 | Apr 20 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 11 | Apr 13 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 11 | Apr 20 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 8 | Apr 20 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 11 mph Summer: 9 mph
Fall: 9 mph Winter: 13 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (264 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
19,886 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 39.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 19,886 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 Morrison County
Soil Type
Silt Loam
Soil pH 5.7–7.1 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 5.5/10
Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.
Season Tips
155-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 Morrison County
96 vegetables that grow well in Zone 4a with planting dates for Morrison County.
Show all 96 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 23 | May 18 | May 25 | Aug 17 – Sep 21 | 80–100 |
| Amaranth | Mar 2 | May 18 | May 25 | Aug 24 – Oct 12 | 90–120 |
| Arugula | Mar 23 | Apr 27 | May 4 | Jun 8 – Aug 10 | 30–50 |
| Asparagus | — | — | May 18 | — | 730–1095 |
| Beets | — | Apr 27 | — | Jun 22 – Jul 20 | 50–70 |
| Belgian Endive | Mar 23 | Apr 27 | May 4 | Aug 24 – Sep 28 | 110–150 |
| Black Beans | — | May 18 | — | Aug 17 – Oct 5 | 90–120 |
| Bok Choy | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 20 | 40–60 |
| Broccoli | Mar 23 | Apr 27 | May 4 | Jul 6 – Aug 17 | 60–90 |
| Broccoli Rabe | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 20 | 40–60 |
| Brussels Sprouts | Mar 23 | Apr 27 | May 4 | Aug 3 – Sep 28 | 90–130 |
| Butternut Squash | Mar 23 | May 18 | May 25 | Aug 24 – Sep 28 | 85–110 |
| Cabbage | Mar 23 | Apr 27 | May 4 | Jul 6 – Aug 31 | 60–100 |
| Carrots | — | Apr 27 | — | Jun 29 – Aug 3 | 60–80 |
| Cauliflower | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 31 | 55–100 |
| Celeriac | Mar 23 | Apr 27 | May 4 | Aug 17 – Sep 21 | 100–120 |
| Celery | Mar 23 | Apr 27 | May 4 | Jul 27 – Sep 21 | 80–120 |
| Celtuce | Mar 23 | Apr 27 | May 4 | Jul 6 – Aug 17 | 60–90 |
| Chard | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 17 | 50–60 |
| Chickpeas | Mar 23 | Apr 27 | May 4 | Jul 27 – Sep 7 | 80–110 |
| Chicory | Mar 23 | Apr 27 | May 4 | Jul 6 – Aug 17 | 60–85 |
| Chinese Cabbage | Mar 23 | Apr 27 | May 4 | Jun 29 – Jul 27 | 50–70 |
| Christmas Lima Beans | Mar 2 | May 18 | May 25 | Aug 17 – Sep 21 | 80–100 |
| Collard Greens | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 31 | 55–75 |
| Corn | — | May 18 | — | Jul 20 – Sep 14 | 60–100 |
| Cress | Mar 23 | Apr 27 | May 4 | May 18 – Jun 8 | 14–21 |
| Crookneck Squash | Mar 23 | May 18 | May 25 | Jul 13 – Aug 10 | 45–60 |
| Crosne | — | Apr 27 | — | Sep 28 – Sep 21 | 150–200 |
| Cucumber | Mar 23 | May 18 | May 25 | Jul 20 – Sep 14 | 50–70 |
| Daikon | — | Apr 27 | — | Jun 22 – Jul 20 | 50–70 |
| Delicata Squash | Mar 23 | May 18 | May 25 | Aug 17 – Sep 21 | 80–100 |
| Edamame | — | May 18 | — | Aug 3 – Sep 14 | 75–100 |
| Endive | Mar 23 | Apr 27 | May 4 | Jun 22 – Jul 27 | 45–65 |
| Escarole | Mar 23 | Apr 27 | May 4 | Jun 29 – Jul 27 | 50–70 |
| Fava Beans | Mar 23 | Apr 27 | May 4 | Jul 20 – Aug 31 | 75–100 |
| Fennel | Mar 2 | May 18 | May 25 | Jul 27 – Sep 7 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 18 | — | Jul 13 – Sep 7 | 50–65 |
| Horseradish | — | — | May 18 | Sep 21 – Oct 12 | 120–180 |
| Hubbard Squash | Mar 23 | May 18 | May 25 | Sep 7 – Oct 12 | 100–120 |
| Kabocha | Mar 23 | May 18 | May 25 | Aug 24 – Sep 21 | 85–100 |
| Kai Lan | Mar 23 | Apr 27 | May 4 | Jun 22 – Jul 20 | 45–60 |
| Kale | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 24 | 50–70 |
| Kidney Beans | — | May 18 | — | Aug 17 – Sep 21 | 85–110 |
| Kohlrabi | Mar 23 | Apr 27 | May 4 | Jun 22 – Jul 27 | 45–65 |
| Komatsuna | Mar 23 | Apr 27 | May 4 | Jun 8 – Jul 13 | 35–50 |
| Leeks | Mar 23 | Apr 27 | May 4 | Aug 3 – Sep 28 | 90–150 |
| Lentils | Mar 23 | Apr 27 | May 4 | Jul 27 – Sep 7 | 80–110 |
| Lettuce | Mar 23 | Apr 27 | May 4 | Jun 8 – Aug 17 | 30–60 |
| Lima Beans | — | May 18 | — | Jul 20 – Aug 31 | 60–90 |
| Mache | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 20 | 40–60 |
| Melon | Mar 23 | May 18 | May 25 | Aug 3 – Sep 21 | 70–100 |
| Microgreens | Mar 23 | Apr 27 | May 4 | May 11 – Jun 8 | 7–21 |
| Mitsuba | Mar 23 | Apr 27 | Apr 27 | Jun 22 – Aug 17 | 50–70 |
| Mizuna | Mar 23 | Apr 27 | May 4 | Jun 8 – Jul 6 | 30–45 |
| Mustard Greens | Mar 23 | Apr 27 | May 4 | Jun 8 – Aug 10 | 30–50 |
| Napa Cabbage | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 3 | 55–75 |
| Onion | Mar 23 | Apr 27 | May 4 | Aug 3 – Sep 21 | 90–120 |
| Pac Choi | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 13 | 40–55 |
| Parsnip | — | Apr 27 | — | Aug 10 – Sep 21 | 100–130 |
| Patty Pan Squash | Mar 23 | May 18 | May 25 | Jul 13 – Aug 10 | 45–60 |
| Peas | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 24 | 55–70 |
| Peppers | Feb 16 | May 18 | May 25 | Jul 27 – Oct 5 | 60–90 |
| Pole Beans | Mar 2 | May 18 | May 25 | Jul 20 – Sep 14 | 55–70 |
| Potatoes | Mar 2 | May 18 | May 25 | Aug 3 – Oct 12 | 70–120 |
| Pumpkin | Mar 23 | May 18 | May 25 | Aug 24 – Oct 12 | 85–120 |
| Purslane | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 20 | 40–60 |
| Radicchio | Mar 23 | Apr 27 | May 4 | Jul 6 – Aug 10 | 60–80 |
| Radish | — | Apr 27 | — | May 25 – Jun 15 | 22–35 |
| Rhubarb | — | — | Jun 1 | — | 365–730 |
| Romanesco | Mar 23 | Apr 27 | May 4 | Jul 20 – Aug 31 | 75–100 |
| Rutabaga | — | Apr 27 | — | Jul 20 – Aug 24 | 80–100 |
| Salsify | — | Apr 27 | — | Aug 10 – Sep 21 | 100–130 |
| Savoy Cabbage | Mar 23 | Apr 27 | May 4 | Jul 13 – Sep 7 | 70–110 |
| Scallions | Mar 23 | Apr 27 | May 4 | Jun 29 – Jul 27 | 50–70 |
| Scarlet Runner Beans | Mar 2 | May 18 | May 25 | Jul 27 – Aug 31 | 60–80 |
| Shallot | Mar 23 | Apr 27 | May 4 | Aug 3 – Sep 21 | 90–120 |
| Shiso | Mar 9 | May 11 | May 25 | Jul 20 – Sep 14 | 50–70 |
| Snap Peas | Mar 2 | May 18 | May 25 | Jul 20 – Sep 14 | 55–70 |
| Snow Peas | Mar 23 | Apr 27 | May 4 | Jun 29 – Aug 24 | 50–65 |
| Soybeans | — | May 18 | — | Aug 10 – Oct 5 | 80–120 |
| Spaghetti Squash | Mar 23 | May 18 | May 25 | Aug 24 – Sep 21 | 85–100 |
| Spinach | Mar 23 | Apr 27 | May 4 | Jun 8 – Aug 10 | 35–50 |
| Squash (Summer) | Mar 23 | May 18 | May 25 | Jul 13 – Sep 14 | 45–65 |
| Squash (Winter) | Mar 23 | May 18 | May 25 | Aug 17 – Oct 12 | 80–120 |
| Sunchoke | — | — | May 18 | Sep 7 – Oct 12 | 110–150 |
| Sunflower | Mar 2 | May 18 | May 25 | Aug 3 – Sep 21 | 70–100 |
| Sweet Corn | — | May 18 | — | Jul 20 – Aug 31 | 60–90 |
| Tatsoi | Mar 23 | Apr 27 | May 4 | Jun 8 – Jul 13 | 35–50 |
| Tomatillo | Mar 2 | May 18 | May 25 | Jul 27 – Oct 5 | 60–85 |
| Tomatoes | Mar 2 | May 18 | May 25 | Jul 27 – Oct 5 | 60–85 |
| Turnip | — | Apr 27 | — | Jun 8 – Jul 13 | 40–60 |
| Watercress | Mar 23 | Apr 27 | May 4 | Jun 15 – Jul 20 | 40–60 |
| Watermelon | Mar 23 | May 18 | May 25 | Aug 3 – Sep 21 | 70–100 |
| Wax Beans | — | May 18 | — | Jul 13 – Sep 7 | 50–65 |
| Zucchini | Mar 23 | May 18 | May 25 | Jul 13 – Sep 7 | 45–60 |
🍓 Fruits to Grow in Morrison County
22 fruits that grow well in Zone 4a with planting dates for Morrison County.
Show all 22 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 1 | Aug 31 – Oct 26 | 90–180 |
| Aronia | — | — | Jun 1 | — | 730–1095 |
| Blueberries | — | — | Jun 1 | — | 730–1095 |
| Cantaloupe | — | — | Jun 1 | Aug 10 – Sep 14 | 70–90 |
| Cranberries | — | — | Jun 1 | — | 730–1095 |
| Currants | — | — | Jun 1 | — | 730–1095 |
| Elderberries | — | — | Jun 1 | — | 730–1095 |
| Goji Berries | — | — | Jun 1 | — | 730–1095 |
| Gooseberries | — | — | Jun 1 | — | 730–1095 |
| Grapes | — | — | Jun 1 | — | 730–1095 |
| Ground Cherry | — | — | Jun 1 | Aug 10 – Oct 5 | 65–80 |
| Hardy Kiwi | — | — | Jun 1 | — | 1095–1825 |
| Haskaps | — | — | Jun 1 | — | 730–1095 |
| Honeydew | — | — | Jun 1 | Aug 24 – Oct 5 | 80–110 |
| Jostaberry | — | — | Jun 1 | — | 730–1095 |
| Lingonberries | — | — | Jun 1 | — | 730–1095 |
| Medlar | — | — | Jun 1 | — | 1095–1825 |
| Mulberries | — | — | Jun 1 | — | 730–1825 |
| Persimmon | — | — | Jun 1 | — | 1095–2555 |
| Raspberries | — | — | Jun 1 | — | 365–730 |
| Serviceberries | — | — | Jun 1 | — | 730–1095 |
| Strawberries | — | — | Jun 1 | Aug 31 – Oct 26 | 90–365 |
🌿 Herbs to Grow in Morrison County
32 herbs that grow well in Zone 4a with planting dates for Morrison County.
Show all 32 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Mar 23 | Apr 27 | Apr 27 | — | 365–730 |
| Anise | Mar 23 | Apr 27 | Apr 27 | Jul 27 – Sep 21 | 90–120 |
| Basil | Mar 9 | May 11 | May 25 | Jul 20 – Sep 21 | 50–75 |
| Bee Balm | — | — | May 11 | Aug 10 – Oct 5 | 90–120 |
| Borage | Mar 23 | Apr 27 | Apr 27 | Jun 22 – Aug 10 | 50–60 |
| Caraway | Mar 23 | Apr 27 | Apr 27 | — | 365–450 |
| Catnip | — | — | May 11 | Jul 13 – Sep 14 | 60–80 |
| Chamomile | Mar 23 | Apr 27 | Apr 27 | Jun 29 – Sep 7 | 60–90 |
| Chervil | Mar 23 | Apr 27 | Apr 27 | Jun 8 – Aug 10 | 40–60 |
| Chives | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Cilantro | Mar 23 | Apr 27 | Apr 27 | Jun 8 – Aug 10 | 40–60 |
| Comfrey | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Dill | Mar 23 | Apr 27 | Apr 27 | Jun 8 – Aug 10 | 40–60 |
| Echinacea | — | — | May 11 | Sep 14 – Oct 5 | 120–180 |
| Fennel (herb) | Mar 23 | Apr 27 | Apr 27 | Jun 29 – Sep 7 | 60–90 |
| Garlic Chives | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Horehound | — | — | May 11 | Jul 27 – Sep 21 | 75–90 |
| Hyssop | — | — | May 11 | Jul 20 – Sep 21 | 70–90 |
| Lemon Balm | — | — | May 11 | Jul 13 – Aug 31 | 60–70 |
| Lovage | — | — | May 11 | Jul 20 – Sep 21 | 70–90 |
| Mint | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Oregano | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Parsley | Mar 23 | Apr 27 | Apr 27 | Jun 29 – Aug 31 | 60–80 |
| Rue | — | — | May 11 | Jul 20 – Sep 21 | 70–90 |
| Sage | — | — | May 11 | Jul 27 – Sep 21 | 75–90 |
| Savory | — | — | May 11 | Jul 6 – Aug 31 | 50–70 |
| Sorrel | Mar 23 | Apr 27 | Apr 27 | Jun 8 – Aug 10 | 40–60 |
| Tarragon | — | — | May 11 | Jul 13 – Sep 21 | 60–90 |
| Thai Basil | Mar 9 | May 11 | May 25 | Jul 20 – Sep 21 | 50–75 |
| Thyme | — | — | May 11 | Jul 20 – Sep 21 | 70–90 |
| Valerian | — | — | May 11 | Sep 14 – Oct 5 | 120–180 |
| Yarrow | — | — | May 11 | Aug 10 – Oct 5 | 90–120 |
Monthly Planting Guide for Morrison County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Morrison County.
Frequently Asked Questions
What planting zone is Morrison County, MN?
Morrison County is in USDA Hardiness Zone 4a. 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 Morrison County, MN?
Based on 31 years of NOAA weather station data, the median last spring frost in Morrison County falls around May 4. In 8 out of 10 years, last frost lands between April 21 and May 20 — a 29-day window of variability. Use May 20 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Morrison County, MN?
The median first fall frost in Morrison County arrives around October 6. In cold years it can arrive as early as September 21; in mild years as late as October 19. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Morrison County?
Morrison County has a frost-free growing season of approximately 155 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 0.72 days per decade.
What is the soil like in Morrison County for gardening?
Morrison County has predominantly Silt Loam soil with a pH range of 5.7–7.1 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Morrison County?
Morrison County has commercial agriculture that includes Corn, Soybeans, Hay. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Morrison County a good location for home gardening?
Morrison County scores 69/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Morrison County gardeners in Zone 4a organize planting dates, track what's growing, and never miss a planting window.
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