Bayfield County, WI — Planting Guide
Bayfield County is in USDA Zone 3b. The average last spring frost is May 14 and the first fall frost is October 3, giving you a growing season of approximately 142 days.
At an elevation of 619 ft, Bayfield County receives approximately 36.6 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 35 days year to year — ranging from April 26 in warm years to June 1 in cold years. The growing season is trending longer by about 2.62 days per decade. Bayfield County scores 58/100 (Moderate) on the Microclimate Index.
🌡️ Zone
3b (-35°F to -30°F min)
❄️ Last Frost
May 14
🍂 First Frost
October 3
📅 Growing Season
142 days
⛰️ Elevation
619 ft
🌧️ Annual Rainfall
36.6 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 | 1.3 in | 7 days | — | None |
| Feb | 1.4 in | 6 days | — | None |
| Mar | 2.4 in | 8 days | — | None |
| Apr | 3.8 in | 10 days | — | None |
| May | 4.4 in | 11 days | — | Low |
| Jun | 4.7 in | 10 days | — | Low |
| Jul | 4.4 in | 9 days | — | Low |
| Aug | 3.4 in | 8 days | 0.9 in | Moderate |
| Sep | 3.2 in | 8 days | 1.1 in | Moderate |
| Oct | 3.1 in | 8 days | — | None |
| Nov | 2.7 in | 8 days | — | None |
| Dec | 1.9 in | 9 days | — | None |
Annual total: 36.7 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.
Bayfield County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-6.8
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) | Jun 1 | Oct 21 | 142 days |
| Cautious | May 20 | Oct 9 | 142 days |
| Average year | May 14 | Oct 3 | 142 days |
| Optimistic | May 7 | Sep 24 | 140 days |
| Aggressive (risky) | Apr 26 | Sep 14 | 141 days |
Not very — frost dates can vary by ±35 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 2.6 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Bayfield County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Bayfield 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 Bayfield County's climate and soil.
County Extension Office
Bayfield 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 Bayfield County
Finding local nurseries & garden centers in Bayfield County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Bayfield 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 Bayfield County WI" or "garden center Bayfield 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 Bayfield County WI" or check your extension office and local parks department. Facebook groups like "Bayfield 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
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
15.6 hours
Summer solstice daylight
Shortest Day
8.4 hours
Winter solstice daylight
Peak Sun Hours
10.2 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 | 3.4 hr | Short day |
| February | 10.1 hr | 4.3 hr | Short day |
| March | 11.6 hr | 5.3 hr | Short day |
| April | 13.3 hr | 6.7 hr | Neutral |
| May | 14.8 hr | 8.5 hr | Long day |
| June | 15.6 hr | 9.4 hr | Long day |
| July | 15.3 hr | 10.2 hr | Long day |
| August | 14 hr | 8.8 hr | Long day |
| September | 12.3 hr | 7.3 hr | Neutral |
| October | 10.6 hr | 5.6 hr | Short day |
| November | 9.1 hr | 3.7 hr | Short day |
| December | 8.4 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
Jul
Microbial activity peaks when soil is warm.
Active Composting
5 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 | 6°F | 16°F | ❄️ Dormant | ~36 weeks |
| Feb | 7°F | 15°F | ❄️ Dormant | ~36 weeks |
| Mar | 19°F | 21°F | ❄️ Dormant | ~36 weeks |
| Apr | 37°F | 34°F | ❄️ Dormant | ~36 weeks |
| May | 51°F | 46°F | ♻️ Active | ~14 weeks |
| Jun | 62°F | 57°F | ♻️ Active | ~14 weeks |
| Jul | 70°F | 63°F | 🔥 Peak | ~8 weeks |
| Aug | 68°F | 64°F | 🔥 Peak | ~8 weeks |
| Sep | 61°F | 60°F | ♻️ Active | ~14 weeks |
| Oct | 48°F | 50°F | 🐢 Slow | ~24 weeks |
| Nov | 33°F | 39°F | ❄️ Dormant | ~36 weeks |
| Dec | 16°F | 27°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 Bayfield 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 3 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Low | Jun, Jul, Aug |
| Cabbage worms | Low | Jun, Jul, Aug |
| Slugs | Low | May, Jun, Jul, Aug |
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 Bayfield 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 23 | Jul 25 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 19 | Jul 25 | ✓ 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 19 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (3 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Oats | Aug 29 | Apr 30 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 8 | Apr 30 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 6 | Apr 30 | — | 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: 8 mph
Fall: 9 mph Winter: 11 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.9/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (132 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
18,291 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
Apr, May, Jun, Jul
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 36.7 inches of rain per year
- A 1,000 sq ft roof can collect roughly 18,291 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 Bayfield County
Soil Type
Silt Loam
Soil pH 5.8–6.8 · 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
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.
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 Bayfield County
87 vegetables that grow well in Zone 3b with planting dates for Bayfield County.
Show all 87 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 2 | May 28 | Jun 4 | Aug 27 – Oct 1 | 80–100 |
| Amaranth | Mar 12 | May 28 | Jun 4 | Sep 3 – Oct 8 | 90–120 |
| Arugula | Apr 2 | May 7 | May 14 | Jun 18 – Aug 20 | 30–50 |
| Asparagus | — | — | May 28 | — | 730–1095 |
| Beets | — | May 7 | — | Jul 2 – Jul 30 | 50–70 |
| Belgian Endive | Apr 2 | May 7 | May 14 | Sep 3 – Sep 17 | 110–150 |
| Black Beans | — | May 28 | — | Aug 27 – Oct 1 | 90–120 |
| Bok Choy | Apr 2 | May 7 | May 14 | Jun 25 – Jul 30 | 40–60 |
| Broccoli | Apr 2 | May 7 | May 14 | Jul 16 – Aug 27 | 60–90 |
| Broccoli Rabe | Apr 2 | May 7 | May 14 | Jun 25 – Jul 30 | 40–60 |
| Brussels Sprouts | Apr 2 | May 7 | May 14 | Aug 13 – Sep 17 | 90–130 |
| Butternut Squash | Apr 2 | May 28 | Jun 4 | Sep 3 – Oct 8 | 85–110 |
| Cabbage | Apr 2 | May 7 | May 14 | Jul 16 – Sep 10 | 60–100 |
| Carrots | — | May 7 | — | Jul 9 – Aug 13 | 60–80 |
| Cauliflower | Apr 2 | May 7 | May 14 | Jul 9 – Sep 10 | 55–100 |
| Celeriac | Apr 2 | May 7 | May 14 | Aug 27 – Sep 17 | 100–120 |
| Celery | Apr 2 | May 7 | May 14 | Aug 6 – Sep 17 | 80–120 |
| Celtuce | Apr 2 | May 7 | May 14 | Jul 16 – Aug 27 | 60–90 |
| Chard | Apr 2 | May 7 | May 14 | Jul 9 – Aug 27 | 50–60 |
| Chickpeas | Apr 2 | May 7 | May 14 | Aug 6 – Sep 17 | 80–110 |
| Chicory | Apr 2 | May 7 | May 14 | Jul 16 – Aug 27 | 60–85 |
| Chinese Cabbage | Apr 2 | May 7 | May 14 | Jul 9 – Aug 6 | 50–70 |
| Collard Greens | Apr 2 | May 7 | May 14 | Jul 9 – Sep 10 | 55–75 |
| Corn | — | May 28 | — | Jul 30 – Sep 24 | 60–100 |
| Cress | Apr 2 | May 7 | May 14 | May 28 – Jun 18 | 14–21 |
| Crookneck Squash | Apr 2 | May 28 | Jun 4 | Jul 23 – Aug 20 | 45–60 |
| Cucumber | Apr 2 | May 28 | Jun 4 | Jul 30 – Sep 24 | 50–70 |
| Daikon | — | May 7 | — | Jul 2 – Jul 30 | 50–70 |
| Delicata Squash | Apr 2 | May 28 | Jun 4 | Aug 27 – Oct 1 | 80–100 |
| Edamame | — | May 28 | — | Aug 13 – Sep 24 | 75–100 |
| Endive | Apr 2 | May 7 | May 14 | Jul 2 – Aug 6 | 45–65 |
| Escarole | Apr 2 | May 7 | May 14 | Jul 9 – Aug 6 | 50–70 |
| Fava Beans | Apr 2 | May 7 | May 14 | Jul 30 – Sep 10 | 75–100 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 28 | — | Jul 23 – Sep 17 | 50–65 |
| Horseradish | — | — | May 28 | Oct 1 | 120–180 |
| Hubbard Squash | Apr 2 | May 28 | Jun 4 | Sep 17 – Oct 8 | 100–120 |
| Kabocha | Apr 2 | May 28 | Jun 4 | Sep 3 – Oct 1 | 85–100 |
| Kai Lan | Apr 2 | May 7 | May 14 | Jul 2 – Jul 30 | 45–60 |
| Kale | Apr 2 | May 7 | May 14 | Jul 9 – Sep 3 | 50–70 |
| Kidney Beans | — | May 28 | — | Aug 27 – Oct 1 | 85–110 |
| Kohlrabi | Apr 2 | May 7 | May 14 | Jul 2 – Aug 6 | 45–65 |
| Komatsuna | Apr 2 | May 7 | May 14 | Jun 18 – Jul 23 | 35–50 |
| Leeks | Apr 2 | May 7 | May 14 | Aug 13 – Sep 17 | 90–150 |
| Lentils | Apr 2 | May 7 | May 14 | Aug 6 – Sep 17 | 80–110 |
| Lettuce | Apr 2 | May 7 | May 14 | Jun 18 – Aug 27 | 30–60 |
| Lima Beans | — | May 28 | — | Jul 30 – Sep 10 | 60–90 |
| Mache | Apr 2 | May 7 | May 14 | Jun 25 – Jul 30 | 40–60 |
| Microgreens | Apr 2 | May 7 | May 14 | May 21 – Jun 18 | 7–21 |
| Mizuna | Apr 2 | May 7 | May 14 | Jun 18 – Jul 16 | 30–45 |
| Mustard Greens | Apr 2 | May 7 | May 14 | Jun 18 – Aug 20 | 30–50 |
| Napa Cabbage | Apr 2 | May 7 | May 14 | Jul 9 – Aug 13 | 55–75 |
| Onion | Apr 2 | May 7 | May 14 | Aug 13 – Sep 17 | 90–120 |
| Pac Choi | Apr 2 | May 7 | May 14 | Jun 25 – Jul 23 | 40–55 |
| Parsnip | — | May 7 | — | Aug 20 – Sep 10 | 100–130 |
| Patty Pan Squash | Apr 2 | May 28 | Jun 4 | Jul 23 – Aug 20 | 45–60 |
| Peas | Apr 2 | May 7 | May 14 | Jul 9 – Sep 3 | 55–70 |
| Peppers | Feb 26 | May 28 | Jun 4 | Aug 6 – Oct 8 | 60–90 |
| Pole Beans | Mar 12 | May 28 | Jun 4 | Jul 30 – Sep 24 | 55–70 |
| Potatoes | Mar 12 | May 28 | Jun 4 | Aug 13 – Oct 8 | 70–120 |
| Pumpkin | Apr 2 | May 28 | Jun 4 | Sep 3 – Oct 8 | 85–120 |
| Purslane | Apr 2 | May 7 | May 14 | Jun 25 – Jul 30 | 40–60 |
| Radish | — | May 7 | — | Jun 4 – Jun 25 | 22–35 |
| Rhubarb | — | — | Jun 11 | — | 365–730 |
| Romanesco | Apr 2 | May 7 | May 14 | Jul 30 – Sep 10 | 75–100 |
| Rutabaga | — | May 7 | — | Jul 30 – Sep 3 | 80–100 |
| Salsify | — | May 7 | — | Aug 20 – Sep 10 | 100–130 |
| Savoy Cabbage | Apr 2 | May 7 | May 14 | Jul 23 – Sep 17 | 70–110 |
| Scallions | Apr 2 | May 7 | May 14 | Jul 9 – Aug 6 | 50–70 |
| Scarlet Runner Beans | Mar 12 | May 28 | Jun 4 | Aug 6 – Sep 10 | 60–80 |
| Shiso | Mar 19 | May 21 | Jun 4 | Jul 30 – Sep 24 | 50–70 |
| Snap Peas | Mar 12 | May 28 | Jun 4 | Jul 30 – Sep 24 | 55–70 |
| Snow Peas | Apr 2 | May 7 | May 14 | Jul 9 – Sep 3 | 50–65 |
| Soybeans | — | May 28 | — | Aug 20 – Oct 1 | 80–120 |
| Spaghetti Squash | Apr 2 | May 28 | Jun 4 | Sep 3 – Oct 1 | 85–100 |
| Spinach | Apr 2 | May 7 | May 14 | Jun 18 – Aug 20 | 35–50 |
| Squash (Summer) | Apr 2 | May 28 | Jun 4 | Jul 23 – Sep 24 | 45–65 |
| Squash (Winter) | Apr 2 | May 28 | Jun 4 | Aug 27 – Oct 8 | 80–120 |
| Sunchoke | — | — | May 28 | Sep 17 – Oct 1 | 110–150 |
| Sunflower | Mar 12 | May 28 | Jun 4 | Aug 13 – Oct 1 | 70–100 |
| Sweet Corn | — | May 28 | — | Jul 30 – Sep 10 | 60–90 |
| Tatsoi | Apr 2 | May 7 | May 14 | Jun 18 – Jul 23 | 35–50 |
| Tomatoes | Mar 12 | May 28 | Jun 4 | Aug 6 – Oct 8 | 60–85 |
| Turnip | — | May 7 | — | Jun 18 – Jul 23 | 40–60 |
| Watercress | Apr 2 | May 7 | May 14 | Jun 25 – Jul 30 | 40–60 |
| Wax Beans | — | May 28 | — | Jul 23 – Sep 17 | 50–65 |
| Zucchini | Apr 2 | May 28 | Jun 4 | Jul 23 – Sep 17 | 45–60 |
🍓 Fruits to Grow in Bayfield County
15 fruits that grow well in Zone 3b with planting dates for Bayfield County.
Show all 15 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 11 | Sep 10 – Oct 15 | 90–180 |
| Aronia | — | — | Jun 11 | — | 730–1095 |
| Blueberries | — | — | Jun 11 | — | 730–1095 |
| Cranberries | — | — | Jun 11 | — | 730–1095 |
| Currants | — | — | Jun 11 | — | 730–1095 |
| Elderberries | — | — | Jun 11 | — | 730–1095 |
| Goji Berries | — | — | Jun 11 | — | 730–1095 |
| Gooseberries | — | — | Jun 11 | — | 730–1095 |
| Hardy Kiwi | — | — | Jun 11 | — | 1095–1825 |
| Haskaps | — | — | Jun 11 | — | 730–1095 |
| Jostaberry | — | — | Jun 11 | — | 730–1095 |
| Lingonberries | — | — | Jun 11 | — | 730–1095 |
| Raspberries | — | — | Jun 11 | — | 365–730 |
| Serviceberries | — | — | Jun 11 | — | 730–1095 |
| Strawberries | — | — | Jun 11 | Sep 10 – Oct 15 | 90–365 |
🌿 Herbs to Grow in Bayfield County
22 herbs that grow well in Zone 3b with planting dates for Bayfield County.
Show all 22 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 2 | May 7 | May 7 | — | 365–730 |
| Bee Balm | — | — | May 21 | Aug 20 – Sep 24 | 90–120 |
| Borage | Apr 2 | May 7 | May 7 | Jul 2 – Aug 20 | 50–60 |
| Caraway | Apr 2 | May 7 | May 7 | — | 365–450 |
| Catnip | — | — | May 21 | Jul 23 – Sep 24 | 60–80 |
| Chamomile | Apr 2 | May 7 | May 7 | Jul 9 – Sep 10 | 60–90 |
| Chervil | Apr 2 | May 7 | May 7 | Jun 18 – Aug 20 | 40–60 |
| Chives | — | — | May 21 | Jul 23 – Sep 24 | 60–90 |
| Cilantro | Apr 2 | May 7 | May 7 | Jun 18 – Aug 20 | 40–60 |
| Comfrey | — | — | May 21 | Jul 23 – Sep 24 | 60–90 |
| Dill | Apr 2 | May 7 | May 7 | Jun 18 – Aug 20 | 40–60 |
| Echinacea | — | — | May 21 | Sep 24 | 120–180 |
| Garlic Chives | — | — | May 21 | Jul 23 – Sep 24 | 60–90 |
| Horehound | — | — | May 21 | Aug 6 – Sep 24 | 75–90 |
| Hyssop | — | — | May 21 | Jul 30 – Sep 24 | 70–90 |
| Lemon Balm | — | — | May 21 | Jul 23 – Sep 10 | 60–70 |
| Lovage | — | — | May 21 | Jul 30 – Sep 24 | 70–90 |
| Mint | — | — | May 21 | Jul 23 – Sep 24 | 60–90 |
| Parsley | Apr 2 | May 7 | May 7 | Jul 9 – Sep 10 | 60–80 |
| Sorrel | Apr 2 | May 7 | May 7 | Jun 18 – Aug 20 | 40–60 |
| Valerian | — | — | May 21 | Sep 24 | 120–180 |
| Yarrow | — | — | May 21 | Aug 20 – Sep 24 | 90–120 |
Monthly Planting Guide for Bayfield County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Bayfield County.
Frequently Asked Questions
What planting zone is Bayfield County, WI?
Bayfield County is in USDA Hardiness Zone 3b. 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 Bayfield County, WI?
Based on 31 years of NOAA weather station data, the median last spring frost in Bayfield County falls around May 14. In 8 out of 10 years, last frost lands between April 26 and June 1 — a 35-day window of variability. Use June 1 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Bayfield County, WI?
The median first fall frost in Bayfield County arrives around October 3. In cold years it can arrive as early as September 14; 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 Bayfield County?
Bayfield 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 2.62 days per decade.
What is the soil like in Bayfield County for gardening?
Bayfield County has predominantly Silt Loam soil with a pH range of 5.8–6.8 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Bayfield County?
Bayfield 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 Bayfield County a good location for home gardening?
Bayfield County scores 58/100 (Moderate) 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 Bayfield County gardeners in Zone 3b 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.
