Jackson County, WI — Planting Guide
Top priorities for Jackson County, Wisconsin gardeners in June
Each item below is timed to Jackson County, Wisconsin's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Transplant basil, cucumber, and peppers outside
Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.
-
Start cucumber, kale, and lettuce indoors
Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.
-
Basket week: lettuce, radish, and arugula
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
July prep starts now
- Starting indoors: basil, peppers, and pole beans
- First harvests: basil, carrots, and cucumber
- Fall sowing: carrots, kale, and lettuce
Jackson County is in USDA Zone 4b. The average last spring frost is May 13 and the first fall frost is October 2, giving you a growing season of approximately 142 days.
At an elevation of 608 ft, Jackson County receives approximately 35.9 in of rainfall annually. Summer highs average 84°F with winter lows around 9°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 24 days year to year — ranging from April 26 in warm years to May 21 in cold years. The growing season is trending longer by about 1.08 days per decade. Jackson County scores 72/100 (Good) on the Microclimate Index.
🌡️ Zone
4b (-25°F to -20°F min)
❄️ Last Frost
May 13
🍂 First Frost
October 2
📅 Growing Season
142 days
⛰️ Elevation
608 ft
🌧️ Annual Rainfall
35.9 in
Monthly Watering Calendar for Jackson County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Quick context: In Jackson County, the watering question isn't "how often" — it's "is the soil moist 4 inches down?" Stick a finger in. Dry? Water. Damp? Wait. The 36" annual rainfall is just the starting context.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.7 in | 6 days | — | None |
| Feb | 1.5 in | 7 days | — | None |
| Mar | 2.6 in | 9 days | — | None |
| Apr | 3.5 in | 11 days | 0.8 in | Moderate |
| May | 3.8 in | 9 days | 0.5 in | Low |
| Jun | 4.9 in | 10 days | — | Low |
| Jul | 3.9 in | 7 days | 0.4 in | Low |
| Aug | 3.6 in | 8 days | 0.7 in | Moderate |
| Sep | 3.3 in | 8 days | 1 in | Moderate |
| Oct | 2.9 in | 7 days | 1.4 in | Moderate |
| Nov | 2.4 in | 9 days | — | None |
| Dec | 1.8 in | 8 days | — | None |
Annual total: 35.9 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.
Jackson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-6.7
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 21 | Oct 13 | 145 days |
| Cautious | May 17 | Oct 7 | 143 days |
| Average year | May 13 | Oct 2 | 142 days |
| Optimistic | May 5 | Sep 28 | 146 days |
| Aggressive (risky) | Apr 26 | Sep 20 | 147 days |
Not very — frost dates can vary by ±24 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Yes — growing seasons are getting longer here (about 1.1 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Jackson County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Jackson 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 Jackson County's climate and soil.
County Extension Office
Jackson County University of Wisconsin-Madison Division of Extension Extension Office
Phone: 608-263-7779
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 Jackson County
Finding local nurseries & garden centers in Jackson County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Jackson 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 Jackson County WI" or "garden center Jackson 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 Jackson County WI" or check your extension office and local parks department. Facebook groups like "Jackson County Gardeners" or "Wisconsin 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 Jackson County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why it matters: Onions are a great example of why day length matters. They "bulb up" only when daylight hits a specific number of hours — plant the wrong variety (short-day in the north, long-day in the south) and you'll get tiny bulbs no matter how well you grow them. Jackson County's latitude determines which onion varieties succeed.
Longest Day
15.3 hours
Summer solstice daylight
Shortest Day
8.7 hours
Winter solstice daylight
Peak Sun Hours
9.6 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 hr | 3.7 hr | Short day |
| February | 10.2 hr | 4.3 hr | Short day |
| March | 11.6 hr | 5.4 hr | Short day |
| April | 13.2 hr | 7.1 hr | Neutral |
| May | 14.6 hr | 8.5 hr | Long day |
| June | 15.3 hr | 9.5 hr | Long day |
| July | 15 hr | 9.6 hr | Long day |
| August | 13.8 hr | 9 hr | Neutral |
| September | 12.3 hr | 6.8 hr | Neutral |
| October | 10.7 hr | 5.4 hr | Short day |
| November | 9.4 hr | 3.8 hr | Short day |
| December | 8.7 hr | 3.4 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Jackson County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Quick context: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Jackson County's monthly soil curve maps these windows to actual months.
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 | 15°F | 22°F | ❄️ Dormant | ~36 weeks |
| Feb | 15°F | 24°F | ❄️ Dormant | ~36 weeks |
| Mar | 26°F | 29°F | ❄️ Dormant | ~36 weeks |
| Apr | 41°F | 41°F | 🐢 Slow | ~24 weeks |
| May | 53°F | 49°F | ♻️ Active | ~14 weeks |
| Jun | 66°F | 60°F | 🔥 Peak | ~8 weeks |
| Jul | 72°F | 65°F | 🔥 Peak | ~8 weeks |
| Aug | 73°F | 68°F | 🔥 Peak | ~8 weeks |
| Sep | 66°F | 64°F | 🔥 Peak | ~8 weeks |
| Oct | 53°F | 55°F | ♻️ Active | ~14 weeks |
| Nov | 36°F | 45°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 Jackson County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
For new gardeners: Pest pressure scales with warmth and humidity. Hot humid Jackson County sees year-round bugs and fungal disease; cold dry regions see almost none. A high pest score means crop rotation, resistant varieties, and a weekly pest-watch routine from day one.
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 | 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 Jackson County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Quick context: Why not just leave bare soil? Weed seeds, erosion, nutrient leaching, and crust formation. A cover crop solves all of these for the cost of seeds and one mowing.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 22 | Jul 31 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 14 | Aug 7 | ✓ 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 25 | Sep 11 | — | 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 11 | Apr 29 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 26 | Apr 22 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 1 | Apr 22 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 28 | Apr 29 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 27 | Apr 22 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Jackson County
For new gardeners: Light wind is good (strengthens stems, aids pollination); strong wind is bad (snaps stems, dries leaves, scatters seeds). Jackson County averages 8.2 mph. If you garden near coast, ridge, or open plains, you're likely above that — plan for it.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 13 mph Summer: 8 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 (200 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Jackson County
How much water you can collect, when to collect it, and what size system you need for your garden.
The practical takeaway: Building a rainwater system is mostly about doing the math: roof area × annual rainfall × 0.6 = gallons you could realistically capture. For Jackson County, that's your 36" times your roof.
Annual Collection
17,892 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 1,500 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 35.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 17,892 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 Jackson County
Soil Type
Silt Loam
Soil pH 6.1–6.7 · Well 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. (35.9 in. annual rainfall)
Season Tips
142-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 Jackson County
95 vegetables that grow well in Zone 4b with planting dates for Jackson County.
Show all 95 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 1 | May 27 | Jun 3 | — | Aug 26 – Sep 30 | 80–100 |
| Amaranth | Mar 11 | May 27 | Jun 3 | — | Sep 2 – Oct 21 | 90–120 |
| Arugula | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Aug 19 | 30–50 |
| Asparagus | — | — | May 27 | — | — | 730–1095 |
| Beets | — | May 6 | — | Jul 10 | Jul 1 – Jul 29 | 50–70 |
| Belgian Endive | Apr 1 | May 6 | May 13 | Jul 10 | Sep 2 – Oct 7 | 110–150 |
| Black Beans | — | May 27 | — | — | Aug 26 – Oct 14 | 90–120 |
| Bok Choy | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 29 | 40–60 |
| Broccoli | Apr 1 | May 6 | May 13 | Jul 10 | Jul 15 – Aug 26 | 60–90 |
| Broccoli Rabe | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 29 | 40–60 |
| Brussels Sprouts | Apr 1 | May 6 | May 13 | Jul 10 | Aug 12 – Oct 7 | 90–130 |
| Butternut Squash | Apr 1 | May 27 | Jun 3 | — | Sep 2 – Oct 7 | 85–110 |
| Cabbage | Apr 1 | May 6 | May 13 | Jul 10 | Jul 15 – Sep 9 | 60–100 |
| Carrots | — | May 6 | — | Jul 10 | Jul 8 – Aug 12 | 60–80 |
| Cauliflower | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Sep 9 | 55–100 |
| Celeriac | Apr 1 | May 6 | May 13 | Jul 10 | Aug 26 – Sep 30 | 100–120 |
| Celery | Apr 1 | May 6 | May 13 | Jul 10 | Aug 5 – Sep 30 | 80–120 |
| Celtuce | Apr 1 | May 6 | May 13 | Jul 10 | Jul 15 – Aug 26 | 60–90 |
| Chard | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Aug 26 | 50–60 |
| Chickpeas | Apr 1 | May 6 | May 13 | Jul 10 | Aug 5 – Sep 16 | 80–110 |
| Chicory | Apr 1 | May 6 | May 13 | Jul 10 | Jul 15 – Aug 26 | 60–85 |
| Chinese Cabbage | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Aug 5 | 50–70 |
| Christmas Lima Beans | Mar 11 | May 27 | Jun 3 | — | Aug 26 – Sep 30 | 80–100 |
| Collard Greens | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Sep 9 | 55–75 |
| Corn | — | May 27 | — | — | Jul 29 – Sep 23 | 60–100 |
| Cress | Apr 1 | May 6 | May 13 | Jul 10 | May 27 – Jun 17 | 14–21 |
| Crookneck Squash | Apr 1 | May 27 | Jun 3 | — | Jul 22 – Aug 19 | 45–60 |
| Crosne | — | May 6 | — | Jul 10 | Oct 7 – Sep 30 | 150–200 |
| Cucumber | Apr 1 | May 27 | Jun 3 | — | Jul 29 – Sep 23 | 50–70 |
| Daikon | — | May 6 | — | Jul 10 | Jul 1 – Jul 29 | 50–70 |
| Delicata Squash | Apr 1 | May 27 | Jun 3 | — | Aug 26 – Sep 30 | 80–100 |
| Edamame | — | May 27 | — | — | Aug 12 – Sep 23 | 75–100 |
| Endive | Apr 1 | May 6 | May 13 | Jul 10 | Jul 1 – Aug 5 | 45–65 |
| Escarole | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Aug 5 | 50–70 |
| Fava Beans | Apr 1 | May 6 | May 13 | Jul 10 | Jul 29 – Sep 9 | 75–100 |
| Fennel | Mar 11 | May 27 | Jun 3 | — | Aug 5 – Sep 16 | 60–90 |
| Garlic | — | — | — | Aug 21 | Nov 20 – Jan 15 | 90–240 |
| Green Beans | — | May 27 | — | — | Jul 22 – Sep 16 | 50–65 |
| Horseradish | — | — | May 27 | — | Sep 30 – Oct 21 | 120–180 |
| Hubbard Squash | Apr 1 | May 27 | Jun 3 | — | Sep 16 – Oct 21 | 100–120 |
| Kabocha | Apr 1 | May 27 | Jun 3 | — | Sep 2 – Sep 30 | 85–100 |
| Kai Lan | Apr 1 | May 6 | May 13 | Jul 10 | Jul 1 – Jul 29 | 45–60 |
| Kale | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Sep 2 | 50–70 |
| Kidney Beans | — | May 27 | — | — | Aug 26 – Sep 30 | 85–110 |
| Kohlrabi | Apr 1 | May 6 | May 13 | Jul 10 | Jul 1 – Aug 5 | 45–65 |
| Komatsuna | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Jul 22 | 35–50 |
| Leeks | Apr 1 | May 6 | May 13 | Jul 10 | Aug 12 – Oct 7 | 90–150 |
| Lentils | Apr 1 | May 6 | May 13 | Jul 10 | Aug 5 – Sep 16 | 80–110 |
| Lettuce | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Aug 26 | 30–60 |
| Lima Beans | — | May 27 | — | — | Jul 29 – Sep 9 | 60–90 |
| Mache | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 29 | 40–60 |
| Melon | Apr 1 | May 27 | Jun 3 | — | Aug 12 – Sep 30 | 70–100 |
| Microgreens | Apr 1 | May 6 | May 13 | Jul 10 | May 20 – Jun 17 | 7–21 |
| Mitsuba | Apr 1 | May 6 | May 6 | Jul 10 | Jul 1 – Aug 26 | 50–70 |
| Mizuna | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Jul 15 | 30–45 |
| Mustard Greens | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Aug 19 | 30–50 |
| Napa Cabbage | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Aug 12 | 55–75 |
| Onion | Apr 1 | May 6 | May 13 | Jul 10 | Aug 12 – Sep 30 | 90–120 |
| Pac Choi | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 22 | 40–55 |
| Parsnip | — | May 6 | — | Jul 10 | Aug 19 – Sep 30 | 100–130 |
| Patty Pan Squash | Apr 1 | May 27 | Jun 3 | — | Jul 22 – Aug 19 | 45–60 |
| Peas | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Sep 2 | 55–70 |
| Peppers | Feb 25 | May 27 | Jun 3 | — | Aug 5 – Oct 14 | 60–90 |
| Pole Beans | Mar 11 | May 27 | Jun 3 | — | Jul 29 – Sep 23 | 55–70 |
| Potatoes | Mar 11 | May 27 | Jun 3 | — | Aug 12 – Oct 21 | 70–120 |
| Pumpkin | Apr 1 | May 27 | Jun 3 | — | Sep 2 – Oct 21 | 85–120 |
| Purslane | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 29 | 40–60 |
| Radicchio | Apr 1 | May 6 | May 13 | Jul 10 | Jul 15 – Aug 19 | 60–80 |
| Radish | — | May 6 | — | Jul 10 | Jun 3 – Jun 24 | 22–35 |
| Rhubarb | — | — | Jun 10 | — | — | 365–730 |
| Romanesco | Apr 1 | May 6 | May 13 | Jul 10 | Jul 29 – Sep 9 | 75–100 |
| Rutabaga | — | May 6 | — | Jul 10 | Jul 29 – Sep 2 | 80–100 |
| Salsify | — | May 6 | — | Jul 10 | Aug 19 – Sep 30 | 100–130 |
| Savoy Cabbage | Apr 1 | May 6 | May 13 | Jul 10 | Jul 22 – Sep 16 | 70–110 |
| Scallions | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Aug 5 | 50–70 |
| Scarlet Runner Beans | Mar 11 | May 27 | Jun 3 | — | Aug 5 – Sep 9 | 60–80 |
| Shallot | Apr 1 | May 6 | May 13 | Jul 10 | Aug 12 – Sep 30 | 90–120 |
| Shiso | Mar 18 | May 20 | Jun 3 | — | Jul 29 – Sep 23 | 50–70 |
| Snap Peas | Mar 11 | May 27 | Jun 3 | — | Jul 29 – Sep 23 | 55–70 |
| Snow Peas | Apr 1 | May 6 | May 13 | Jul 10 | Jul 8 – Sep 2 | 50–65 |
| Soybeans | — | May 27 | — | — | Aug 19 – Oct 14 | 80–120 |
| Spaghetti Squash | Apr 1 | May 27 | Jun 3 | — | Sep 2 – Sep 30 | 85–100 |
| Spinach | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Aug 19 | 35–50 |
| Squash (Summer) | Apr 1 | May 27 | Jun 3 | — | Jul 22 – Sep 23 | 45–65 |
| Squash (Winter) | Apr 1 | May 27 | Jun 3 | — | Aug 26 – Oct 21 | 80–120 |
| Sunchoke | — | — | May 27 | — | Sep 16 – Oct 21 | 110–150 |
| Sweet Corn | — | May 27 | — | — | Jul 29 – Sep 9 | 60–90 |
| Tatsoi | Apr 1 | May 6 | May 13 | Jul 10 | Jun 17 – Jul 22 | 35–50 |
| Tomatillo | Mar 11 | May 27 | Jun 3 | — | Aug 5 – Oct 14 | 60–85 |
| Tomatoes | Mar 11 | May 27 | Jun 3 | — | Aug 5 – Oct 14 | 60–85 |
| Turnip | — | May 6 | — | Jul 10 | Jun 17 – Jul 22 | 40–60 |
| Watercress | Apr 1 | May 6 | May 13 | Jul 10 | Jun 24 – Jul 29 | 40–60 |
| Watermelon | Apr 1 | May 27 | Jun 3 | — | Aug 12 – Sep 30 | 70–100 |
| Wax Beans | — | May 27 | — | — | Jul 22 – Sep 16 | 50–65 |
| Zucchini | Apr 1 | May 27 | Jun 3 | — | Jul 22 – Sep 16 | 45–60 |
🍓 Fruits to Grow in Jackson County
22 fruits that grow well in Zone 4b with planting dates for Jackson County.
Show all 22 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 10 | — | Sep 9 – Nov 4 | 90–180 |
| Aronia | — | — | Jun 10 | — | — | 730–1095 |
| Blueberries | — | — | Jun 10 | — | — | 730–1095 |
| Cantaloupe | — | — | Jun 10 | — | Aug 19 – Sep 23 | 70–90 |
| Cranberries | — | — | Jun 10 | — | — | 730–1095 |
| Currants | — | — | Jun 10 | — | — | 730–1095 |
| Elderberries | — | — | Jun 10 | — | — | 730–1095 |
| Goji Berries | — | — | Jun 10 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 10 | — | — | 730–1095 |
| Grapes | — | — | Jun 10 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 10 | — | Aug 19 – Oct 14 | 65–80 |
| Hardy Kiwi | — | — | Jun 10 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 10 | — | — | 730–1095 |
| Honeydew | — | — | Jun 10 | — | Sep 2 – Oct 14 | 80–110 |
| Jostaberry | — | — | Jun 10 | — | — | 730–1095 |
| Lingonberries | — | — | Jun 10 | — | — | 730–1095 |
| Medlar | — | — | Jun 10 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 10 | — | — | 730–1825 |
| Persimmon | — | — | Jun 10 | — | — | 1095–2555 |
| Raspberries | — | — | Jun 10 | — | — | 365–730 |
| Serviceberries | — | — | Jun 10 | — | — | 730–1095 |
| Strawberries | — | — | Jun 10 | — | Sep 9 – Nov 4 | 90–365 |
🌿 Herbs to Grow in Jackson County
30 herbs that grow well in Zone 4b with planting dates for Jackson County.
Show all 30 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 1 | May 6 | May 6 | Jul 10 | — | 365–730 |
| Anise | Apr 1 | May 6 | May 6 | Jul 10 | Aug 5 – Sep 30 | 90–120 |
| Basil | Mar 18 | May 20 | Jun 3 | — | Jul 29 – Sep 30 | 50–75 |
| Bee Balm | — | — | May 20 | — | Aug 19 – Oct 14 | 90–120 |
| Borage | Apr 1 | May 6 | May 6 | Jul 10 | Jul 1 – Aug 19 | 50–60 |
| Caraway | Apr 1 | May 6 | May 6 | Jul 10 | — | 365–450 |
| Catnip | — | — | May 20 | — | Jul 22 – Sep 23 | 60–80 |
| Chamomile | Apr 1 | May 6 | May 6 | Jul 10 | Jul 8 – Sep 16 | 60–90 |
| Chervil | Apr 1 | May 6 | May 6 | Jul 10 | Jun 17 – Aug 19 | 40–60 |
| Chives | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Cilantro | Apr 1 | May 6 | May 6 | Jul 10 | Jun 17 – Aug 19 | 40–60 |
| Comfrey | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Dill | Apr 1 | May 6 | May 6 | Jul 10 | Jun 17 – Aug 19 | 40–60 |
| Fennel (herb) | Apr 1 | May 6 | May 6 | Jul 10 | Jul 8 – Sep 16 | 60–90 |
| Garlic Chives | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Horehound | — | — | May 20 | — | Aug 5 – Sep 30 | 75–90 |
| Hyssop | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Lemon Balm | — | — | May 20 | — | Jul 22 – Sep 9 | 60–70 |
| Lovage | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Mint | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Oregano | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Parsley | Apr 1 | May 6 | May 6 | Jul 10 | Jul 8 – Sep 9 | 60–80 |
| Rue | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Sage | — | — | May 20 | — | Aug 5 – Sep 30 | 75–90 |
| Savory | — | — | May 20 | — | Jul 15 – Sep 9 | 50–70 |
| Sorrel | Apr 1 | May 6 | May 6 | Jul 10 | Jun 17 – Aug 19 | 40–60 |
| Tarragon | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Thai Basil | Mar 18 | May 20 | Jun 3 | — | Jul 29 – Sep 30 | 50–75 |
| Thyme | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Valerian | — | — | May 20 | — | Sep 23 – Oct 14 | 120–180 |
🌸 Flowers to Grow in Jackson County
49 flowers that grow well in Zone 4b with planting dates for Jackson County.
Show all 49 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 25 | May 20 | May 20 | — | Jul 15 – Sep 30 | 60–75 |
| Alliums | — | — | — | Aug 21 | Sep 25 – Oct 23 | 28–42 |
| Astilbe | Mar 4 | — | May 27 | — | Aug 19 – Oct 14 | 70–100 |
| Bachelor's Button | Mar 25 | Apr 29 | May 13 | — | Jul 15 – Sep 16 | 60–90 |
| Begonias | Feb 25 | — | May 20 | — | Jul 29 – Oct 7 | 70–90 |
| Black-eyed Susan | Mar 4 | May 13 | May 27 | — | Aug 19 – Nov 4 | 60–80 |
| Bleeding Hearts | Mar 4 | — | May 27 | — | Jul 22 – Sep 2 | 60–90 |
| Calendula | Mar 25 | Apr 29 | May 13 | — | Jul 1 – Sep 16 | 50–70 |
| Celosia | Apr 8 | May 27 | May 27 | — | Jul 29 – Oct 14 | 60–90 |
| Columbine | Mar 4 | May 27 | May 27 | — | Jul 22 – Sep 9 | 70–100 |
| Coreopsis | Mar 4 | May 20 | May 27 | — | Aug 12 – Nov 4 | 60–80 |
| Cosmos | Apr 15 | May 20 | May 20 | — | Jul 29 – Oct 21 | 60–90 |
| Crocus | — | — | — | Aug 21 | Jun 26 – Jul 24 | 10–20 |
| Daffodils | — | — | — | Aug 21 | Jul 3 – Jul 31 | 20–40 |
| Dahlias | Apr 15 | May 27 | May 27 | — | Aug 26 – Nov 4 | 70–120 |
| Daylily | Mar 4 | — | May 27 | — | Aug 26 – Nov 4 | 60–90 |
| Dianthus | Mar 11 | Apr 22 | May 6 | — | Jun 24 – Sep 2 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 4 | May 27 | May 27 | — | Aug 26 – Nov 4 | 70–90 |
| Foxglove | Mar 4 | May 27 | May 27 | — | Jul 22 – Sep 2 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 18 | May 27 | May 27 | — | Aug 5 – Nov 11 | 70–100 |
| Geraniums | Feb 25 | — | May 20 | — | Jul 29 – Oct 7 | 70–100 |
| Gladiolus | — | May 20 | May 20 | — | Aug 19 – Oct 28 | 70–100 |
| Hostas | Feb 25 | — | May 27 | — | Aug 26 – Nov 4 | 60–90 |
| Hyacinths | — | — | — | Aug 21 | Jul 24 – Aug 14 | 14–28 |
| Hydrangeas | Feb 25 | — | May 27 | — | Aug 19 – Oct 21 | 90–150 |
| Impatiens | Mar 11 | — | May 27 | — | Aug 12 – Oct 14 | 60–75 |
| Irises | — | Division | May 27 | — | Jul 22 – Aug 26 | 60–100 |
| Larkspur | — | Apr 15 | — | — | Jun 24 – Aug 12 | 60–90 |
| Lilies | — | Division | May 27 | — | Aug 19 – Oct 21 | 70–120 |
| Lobelia | Mar 4 | — | May 13 | — | Jul 8 – Sep 9 | 70–80 |
| Lupine | Mar 4 | May 27 | May 27 | — | Jul 22 – Sep 2 | 75–100 |
| Marigolds | Apr 1 | May 20 | May 20 | — | Jul 15 – Sep 30 | 50–70 |
| Nasturtium | Apr 15 | May 20 | May 20 | — | Jul 15 – Oct 7 | 55–65 |
| Pansy | Feb 25 | — | May 13 | — | Jul 8 – Aug 26 | 70–90 |
| Peonies | — | Division | May 27 | — | Aug 5 – Sep 9 | 90–120 |
| Petunia | Mar 11 | — | May 20 | — | Jul 29 – Oct 14 | 70–90 |
| Phlox | Mar 4 | May 27 | May 27 | — | Aug 19 – Oct 28 | 80–110 |
| Portulaca | Apr 8 | May 27 | May 27 | — | Jul 15 – Sep 30 | 50–70 |
| Roses | Feb 25 | — | May 27 | — | Aug 19 – Nov 4 | 90–180 |
| Salvia | Mar 11 | — | May 20 | — | Jul 29 – Oct 7 | 70–90 |
| Sedum (Stonecrop) | Mar 4 | — | May 27 | — | Sep 30 – Nov 25 | 60–90 |
| Snapdragon | Mar 4 | — | May 13 | — | Jul 22 – Sep 16 | 70–100 |
| Sunflower | Apr 22 | May 20 | May 20 | — | Aug 12 – Oct 14 | 70–100 |
| Sweet Alyssum | Mar 25 | May 6 | May 13 | — | Jun 24 – Aug 26 | 45–60 |
| Sweet Pea | Apr 1 | Apr 8 | May 13 | — | Aug 5 – Sep 23 | 65–85 |
| Tulips | — | — | — | Aug 21 | Jul 17 – Aug 7 | 15–30 |
| Vinca (Annual) | Feb 25 | — | May 27 | — | Aug 5 – Oct 14 | 70–90 |
| Yarrow | Mar 4 | May 13 | May 27 | — | Aug 12 – Nov 4 | 60–90 |
| Zinnia | Apr 15 | May 20 | May 20 | — | Jul 29 – Oct 14 | 60–70 |
Monthly Planting Guide for Jackson County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Jackson County.
Frequently Asked Questions
What planting zone is Jackson County, WI?
Jackson County is in USDA Hardiness Zone 4b. 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 Jackson County, WI?
Based on 31 years of NOAA weather station data, the median last spring frost in Jackson County falls around May 13. In 8 out of 10 years, last frost lands between April 26 and May 21 — a 24-day window of variability. Use May 21 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Jackson County, WI?
The median first fall frost in Jackson County arrives around October 2. In cold years it can arrive as early as September 20; in mild years as late as October 13. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Jackson County?
Jackson County has a frost-free growing season of approximately 142 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 1.08 days per decade.
What is the soil like in Jackson County for gardening?
Jackson County has predominantly Silt Loam soil with a pH range of 6.1–6.7 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Jackson County?
Jackson 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 Jackson County a good location for home gardening?
Jackson County scores 72/100 (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 Jackson County Garden Planner — Free
A 22-page printable planner built for Jackson County (Zone 4b). 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