Sauk County, WI — Planting Guide
Your July gardening checklist
Each item below is timed to Sauk County, Wisconsin's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Time to start peppers, astilbe, and begonias inside
Your window is short. These crops want several weeks of indoor growth before they go outside.
-
Start harvesting basil, carrots, and cucumber
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
-
Start your fall crops: carrots, kale, and lettuce
Keep young seedlings shaded and moist in summer heat. A row of taller crops works as natural shade.
A few tasks this July that'll pay off in August
- First harvests: basil, cucumber, and green beans
- Fall sowing: alliums, crocus, and daffodils
Sauk County is in USDA Zone 5a. The average last spring frost is May 3 and the first fall frost is October 7, giving you a growing season of approximately 157 days.
At an elevation of 1,002 ft, Sauk County receives approximately 30.3 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 22 in warm years to May 21 in cold years. The growing season is trending longer by about 0.74 days per decade. Sauk County scores 73/100 (Good) on the Microclimate Index.
🌡️ Zone
5a (-20°F to -15°F min)
❄️ Last Frost
May 3
🍂 First Frost
October 7
📅 Growing Season
157 days
⛰️ Elevation
1,002 ft
🌧️ Annual Rainfall
30.3 in
Monthly Watering Calendar for Sauk County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why it matters: Most vegetables want about 1 inch of water per week. Sauk County gets 30" a year — months that hit that 1"/week need zero supplemental watering; months that fall short, the table tells you how much to add. Saves you from drowning roots and from drought-stressing plants into bolting.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.3 in | 6 days | — | None |
| Feb | 1.3 in | 7 days | — | None |
| Mar | 2.2 in | 10 days | — | None |
| Apr | 3.3 in | 11 days | 1 in | Moderate |
| May | 3.4 in | 9 days | 0.9 in | Moderate |
| Jun | 4 in | 10 days | 0.3 in | Low |
| Jul | 2.9 in | 8 days | 1.4 in | Moderate |
| Aug | 3.6 in | 8 days | 0.7 in | Moderate |
| Sep | 2.3 in | 6 days | 2 in | High |
| Oct | 2.1 in | 8 days | 2.2 in | High |
| Nov | 2.3 in | 9 days | — | None |
| Dec | 1.8 in | 7 days | — | None |
Annual total: 30.5 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.
Sauk County Soil Profile
Soil Type
Silt Loam
Soil pH
6-6.7
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 18 | 150 days |
| Cautious | May 13 | Oct 13 | 153 days |
| Average year | May 3 | Oct 7 | 157 days |
| Optimistic | Apr 27 | Oct 2 | 158 days |
| Aggressive (risky) | Apr 22 | Sep 19 | 150 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 longer (0.7 days/decade). Historical frost dates are still reliable for planning.
Gardening Difficulty Score
Sauk County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Sauk 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 Sauk County's climate and soil.
County Extension Office
Sauk 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 Sauk County
Finding local nurseries & garden centers in Sauk County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Sauk 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 Sauk County WI" or "garden center Sauk 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 Sauk County WI" or check your extension office and local parks department. Facebook groups like "Sauk 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 Sauk County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Quick context: 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. Sauk County's latitude determines which onion varieties succeed.
Longest Day
15.2 hours
Summer solstice daylight
Shortest Day
8.8 hours
Winter solstice daylight
Peak Sun Hours
10 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 | 3.6 hr | Short day |
| February | 10.3 hr | 4.3 hr | Short day |
| March | 11.6 hr | 5.6 hr | Short day |
| April | 13.2 hr | 7 hr | Neutral |
| May | 14.5 hr | 8.5 hr | Long day |
| June | 15.2 hr | 9.9 hr | Long day |
| July | 14.9 hr | 10 hr | Long day |
| August | 13.8 hr | 8.9 hr | Neutral |
| September | 12.3 hr | 7.1 hr | Neutral |
| October | 10.8 hr | 5.4 hr | Short day |
| November | 9.4 hr | 3.8 hr | Short day |
| December | 8.8 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 Sauk County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
The practical takeaway: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Sauk 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 | 17°F | 24°F | ❄️ Dormant | ~36 weeks |
| Mar | 27°F | 30°F | ❄️ Dormant | ~36 weeks |
| Apr | 43°F | 41°F | 🐢 Slow | ~24 weeks |
| May | 54°F | 49°F | ♻️ Active | ~14 weeks |
| Jun | 66°F | 60°F | 🔥 Peak | ~8 weeks |
| Jul | 71°F | 65°F | 🔥 Peak | ~8 weeks |
| Aug | 75°F | 68°F | 🔥 Peak | ~8 weeks |
| Sep | 64°F | 63°F | ♻️ Active | ~14 weeks |
| Oct | 51°F | 56°F | ♻️ Active | ~14 weeks |
| Nov | 39°F | 45°F | ❄️ Dormant | ~36 weeks |
| Dec | 23°F | 31°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 Sauk County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
What this means for you: Pest score isn't pass/fail. It's a planning input. Higher scores mean: more compost (resilient plants), wider spacing (air circulation), resistant varieties (built-in defense), and inspection (catch issues at egg stage).
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 |
| 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
- 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 Sauk County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
For new gardeners: You don't need a farm to use cover crops. A 4x8 raised bed accepts cover crops just as well as a half-acre. Sauk County's climate determines the calendar; the principle is universal.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 10 | Aug 12 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 3 | Aug 12 | ✓ 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 15 | Sep 16 | — | 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 29 | Apr 12 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 24 | Apr 12 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 8 | Apr 19 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 9 | Apr 19 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 16 | Apr 19 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Sauk County
What this means for you: Wind shapes the garden you don't think about: bee paths, evaporation, structural stress on tomato cages. Sauk County's 8.0 mph background level is a baseline you should know before placing the tallest crops (sunflowers, pole beans, sweet corn).
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 12 mph Summer: 8 mph
Fall: 10 mph Winter: 13 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.1/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (290 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Sauk County
How much water you can collect, when to collect it, and what size system you need for your garden.
Why it matters: Captured rainwater is better for plants than tap water (no chlorine), works during water restrictions, and reduces stormwater runoff. Sauk County's 30" annual rainfall is a meaningful pool — most homes could capture 10,000+ gallons a year with a decent system.
Annual Collection
15,201 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, 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 30.5 inches of rain per year
- A 1,000 sq ft roof can collect roughly 15,201 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 Sauk County
Soil Type
Silt Loam
Soil pH 6–6.7 · Moderately 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. (30.3 in. annual rainfall)
Season Tips
157-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 Sauk County
105 vegetables that grow well in Zone 5a with planting dates for Sauk County.
Show all 105 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 29 | May 10 | May 17 | — | Aug 9 – Sep 13 | 80–100 |
| Amaranth | Mar 8 | May 10 | May 17 | — | Aug 16 – Oct 4 | 90–120 |
| Arugula | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Aug 9 | 30–50 |
| Asparagus | — | — | May 17 | — | — | 730–1095 |
| Beets | — | Apr 19 | — | Jul 29 | Jun 14 – Jul 12 | 50–70 |
| Belgian Endive | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 23 – Oct 18 | 110–150 |
| Bitter Melon | Mar 8 | May 10 | May 17 | — | Jul 19 – Aug 30 | 60–90 |
| Black Beans | — | May 10 | — | — | Aug 9 – Sep 27 | 90–120 |
| Bok Choy | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 19 | 40–60 |
| Broccoli | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 5 – Aug 16 | 60–90 |
| Broccoli Rabe | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 19 | 40–60 |
| Brussels Sprouts | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 2 – Sep 27 | 90–130 |
| Butternut Squash | Mar 29 | May 10 | May 17 | — | Aug 16 – Sep 20 | 85–110 |
| Cabbage | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 5 – Aug 30 | 60–100 |
| Calabash | Mar 8 | May 10 | May 17 | — | Aug 9 – Oct 4 | 80–120 |
| Carrots | — | Apr 19 | — | Jul 29 | Jun 21 – Jul 26 | 60–80 |
| Cauliflower | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 30 | 55–100 |
| Celeriac | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 16 – Sep 20 | 100–120 |
| Celery | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 26 – Sep 20 | 80–120 |
| Celtuce | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 5 – Aug 16 | 60–90 |
| Chard | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 16 | 50–60 |
| Chickpeas | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 26 – Sep 6 | 80–110 |
| Chicory | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 5 – Aug 16 | 60–85 |
| Chinese Cabbage | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Jul 26 | 50–70 |
| Christmas Lima Beans | Mar 8 | May 10 | May 17 | — | Aug 9 – Sep 13 | 80–100 |
| Collard Greens | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 30 | 55–75 |
| Corn | — | May 10 | — | — | Jul 12 – Sep 6 | 60–100 |
| Cowpeas | — | May 10 | — | — | Jul 12 – Aug 23 | 60–90 |
| Cress | Mar 29 | Apr 19 | May 3 | Jul 29 | May 17 – Jun 7 | 14–21 |
| Crookneck Squash | Mar 29 | May 10 | May 17 | — | Jul 5 – Aug 2 | 45–60 |
| Crosne | — | Apr 19 | — | Jul 29 | Sep 20 – Oct 4 | 150–200 |
| Cucumber | Mar 29 | May 10 | May 17 | — | Jul 12 – Sep 6 | 50–70 |
| Daikon | — | Apr 19 | — | Jul 29 | Jun 14 – Jul 12 | 50–70 |
| Delicata Squash | Mar 29 | May 10 | May 17 | — | Aug 9 – Sep 13 | 80–100 |
| Edamame | — | May 10 | — | — | Jul 26 – Sep 6 | 75–100 |
| Eggplant | Feb 22 | May 10 | May 17 | — | Jul 26 – Sep 27 | 65–85 |
| Endive | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 21 – Jul 26 | 45–65 |
| Escarole | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Jul 26 | 50–70 |
| Fava Beans | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 19 – Aug 30 | 75–100 |
| Fennel | Mar 8 | May 10 | May 17 | — | Jul 19 – Aug 30 | 60–90 |
| Garlic | — | — | — | Aug 26 | Nov 25 – Feb 10 | 90–240 |
| Green Beans | — | May 10 | — | — | Jul 5 – Aug 30 | 50–65 |
| Horseradish | — | — | May 17 | — | Sep 20 – Nov 1 | 120–180 |
| Hot Peppers | Feb 22 | May 10 | May 17 | — | Jul 26 – Nov 1 | 70–120 |
| Hubbard Squash | Mar 29 | May 10 | May 17 | — | Aug 30 – Oct 4 | 100–120 |
| Kabocha | Mar 29 | May 10 | May 17 | — | Aug 16 – Sep 13 | 85–100 |
| Kai Lan | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 21 – Jul 19 | 45–60 |
| Kale | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 23 | 50–70 |
| Kidney Beans | — | May 10 | — | — | Aug 9 – Sep 13 | 85–110 |
| Kohlrabi | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 21 – Jul 26 | 45–65 |
| Komatsuna | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Jul 12 | 35–50 |
| Leeks | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 2 – Oct 18 | 90–150 |
| Lentils | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 26 – Sep 6 | 80–110 |
| Lettuce | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Aug 16 | 30–60 |
| Lima Beans | — | May 10 | — | — | Jul 12 – Aug 23 | 60–90 |
| Mache | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 19 | 40–60 |
| Melon | Mar 29 | May 10 | May 17 | — | Jul 26 – Sep 13 | 70–100 |
| Microgreens | Mar 29 | Apr 19 | May 3 | Jul 29 | May 10 – Jun 7 | 7–21 |
| Mitsuba | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 21 – Aug 16 | 50–70 |
| Mizuna | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Jul 5 | 30–45 |
| Mustard Greens | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Aug 9 | 30–50 |
| Napa Cabbage | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 2 | 55–75 |
| New Zealand Spinach | Mar 8 | May 10 | May 17 | — | Jul 12 – Aug 9 | 55–70 |
| Okra | Mar 8 | May 10 | May 17 | — | Jul 12 – Sep 6 | 50–65 |
| Onion | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 2 – Sep 20 | 90–120 |
| Pac Choi | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 12 | 40–55 |
| Parsnip | — | Apr 19 | — | Jul 29 | Aug 2 – Sep 13 | 100–130 |
| Patty Pan Squash | Mar 29 | May 10 | May 17 | — | Jul 5 – Aug 2 | 45–60 |
| Peas | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 23 | 55–70 |
| Peppers | Feb 22 | May 10 | May 17 | — | Jul 19 – Sep 27 | 60–90 |
| Pole Beans | Mar 8 | May 10 | May 17 | — | Jul 12 – Sep 6 | 55–70 |
| Potatoes | Mar 8 | May 10 | May 17 | — | Jul 26 – Oct 4 | 70–120 |
| Pumpkin | Mar 29 | May 10 | May 17 | — | Aug 16 – Oct 4 | 85–120 |
| Purslane | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 19 | 40–60 |
| Radicchio | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 5 – Aug 9 | 60–80 |
| Radish | — | Apr 19 | — | Jul 29 | May 17 – Jun 7 | 22–35 |
| Rhubarb | — | — | May 24 | — | — | 365–730 |
| Romanesco | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 19 – Aug 30 | 75–100 |
| Rutabaga | — | Apr 19 | — | Jul 29 | Jul 12 – Aug 16 | 80–100 |
| Salsify | — | Apr 19 | — | Jul 29 | Aug 2 – Sep 13 | 100–130 |
| Savoy Cabbage | Mar 29 | Apr 19 | May 3 | Jul 29 | Jul 12 – Sep 6 | 70–110 |
| Scallions | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Jul 26 | 50–70 |
| Scarlet Runner Beans | Mar 8 | May 10 | May 17 | — | Jul 19 – Aug 23 | 60–80 |
| Shallot | Mar 29 | Apr 19 | May 3 | Jul 29 | Aug 2 – Sep 20 | 90–120 |
| Shiso | Mar 15 | May 10 | May 17 | — | Jul 12 – Sep 6 | 50–70 |
| Snap Peas | Mar 8 | May 10 | May 17 | — | Jul 12 – Sep 6 | 55–70 |
| Snow Peas | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 28 – Aug 23 | 50–65 |
| Soybeans | — | May 10 | — | — | Aug 2 – Sep 27 | 80–120 |
| Spaghetti Squash | Mar 29 | May 10 | May 17 | — | Aug 16 – Sep 13 | 85–100 |
| Spinach | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Aug 9 | 35–50 |
| Squash (Summer) | Mar 29 | May 10 | May 17 | — | Jul 5 – Sep 6 | 45–65 |
| Squash (Winter) | Mar 29 | May 10 | May 17 | — | Aug 9 – Oct 4 | 80–120 |
| Sunchoke | — | — | May 17 | — | Sep 6 – Nov 1 | 110–150 |
| Sweet Corn | — | May 10 | — | — | Jul 12 – Aug 23 | 60–90 |
| Sweet Potatoes | Mar 8 | May 10 | May 17 | — | Aug 16 – Oct 4 | 90–120 |
| Tatsoi | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 7 – Jul 12 | 35–50 |
| Tomatillo | Mar 8 | May 10 | May 17 | — | Jul 19 – Sep 27 | 60–85 |
| Tomatoes | Mar 8 | May 10 | May 17 | — | Jul 19 – Sep 27 | 60–85 |
| Turnip | — | Apr 19 | — | Jul 29 | May 31 – Jul 5 | 40–60 |
| Watercress | Mar 29 | Apr 19 | May 3 | Jul 29 | Jun 14 – Jul 19 | 40–60 |
| Watermelon | Mar 29 | May 10 | May 17 | — | Jul 26 – Sep 13 | 70–100 |
| Wax Beans | — | May 10 | — | — | Jul 5 – Aug 30 | 50–65 |
| Winter Melon | Mar 8 | May 10 | May 17 | — | Aug 16 – Oct 4 | 90–120 |
| Yard Long Beans | Mar 8 | May 10 | May 17 | — | Jul 12 – Aug 23 | 55–80 |
| Zucchini | Mar 29 | May 10 | May 17 | — | Jul 5 – Aug 30 | 45–60 |
🍓 Fruits to Grow in Sauk County
27 fruits that grow well in Zone 5a with planting dates for Sauk County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 24 | — | Aug 23 – Nov 8 | 90–180 |
| Aronia | — | — | May 24 | — | — | 730–1095 |
| Blackberries | — | — | May 24 | — | — | 365–730 |
| Blueberries | — | — | May 24 | — | — | 730–1095 |
| Boysenberries | — | — | May 24 | — | — | 365–730 |
| Cantaloupe | — | — | May 24 | — | Aug 2 – Sep 6 | 70–90 |
| Che Fruit | — | — | May 24 | — | — | 1095–1825 |
| Cranberries | — | — | May 24 | — | — | 730–1095 |
| Currants | — | — | May 24 | — | — | 730–1095 |
| Elderberries | — | — | May 24 | — | — | 730–1095 |
| Goji Berries | — | — | May 24 | — | — | 730–1095 |
| Gooseberries | — | — | May 24 | — | — | 730–1095 |
| Grapes | — | — | May 24 | — | — | 730–1095 |
| Ground Cherry | — | — | May 24 | — | Aug 2 – Sep 27 | 65–80 |
| Hardy Kiwi | — | — | May 24 | — | — | 1095–1825 |
| Haskaps | — | — | May 24 | — | — | 730–1095 |
| Honeydew | — | — | May 24 | — | Aug 16 – Sep 27 | 80–110 |
| Jostaberry | — | — | May 24 | — | — | 730–1095 |
| Lingonberries | — | — | May 24 | — | — | 730–1095 |
| Medlar | — | — | May 24 | — | — | 1095–1825 |
| Mulberries | — | — | May 24 | — | — | 730–1825 |
| Pawpaw | — | — | May 24 | — | — | 1095–2555 |
| Persimmon | — | — | May 24 | — | — | 1095–2555 |
| Quince | — | — | May 24 | — | — | 1095–1825 |
| Raspberries | — | — | May 24 | — | — | 365–730 |
| Serviceberries | — | — | May 24 | — | — | 730–1095 |
| Strawberries | — | — | May 24 | — | Aug 23 – Nov 8 | 90–365 |
🌿 Herbs to Grow in Sauk County
34 herbs that grow well in Zone 5a with planting dates for Sauk County.
Show all 34 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 29 | Apr 19 | Apr 26 | Jul 29 | — | 365–730 |
| Anise | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jul 26 – Oct 11 | 90–120 |
| Basil | Mar 15 | May 10 | May 17 | — | Jul 12 – Sep 13 | 50–75 |
| Bee Balm | — | — | May 10 | — | Aug 9 – Oct 25 | 90–120 |
| Borage | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 21 – Aug 9 | 50–60 |
| Caraway | Mar 29 | Apr 19 | Apr 26 | Jul 29 | — | 365–450 |
| Catnip | — | — | May 10 | — | Jul 12 – Sep 13 | 60–80 |
| Chamomile | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 28 – Sep 6 | 60–90 |
| Chervil | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 7 – Aug 9 | 40–60 |
| Chives | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Cilantro | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 7 – Aug 9 | 40–60 |
| Comfrey | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Cumin | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Aug 9 – Oct 11 | 100–120 |
| Dill | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 7 – Aug 9 | 40–60 |
| Epazote | Mar 15 | May 10 | May 17 | — | Jul 5 – Aug 30 | 45–60 |
| Fennel (herb) | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 28 – Sep 6 | 60–90 |
| Feverfew | — | — | May 10 | — | Aug 9 – Oct 25 | 90–120 |
| Garlic Chives | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Horehound | — | — | May 10 | — | Jul 26 – Sep 20 | 75–90 |
| Hyssop | — | — | May 10 | — | Jul 19 – Sep 20 | 70–90 |
| Lemon Balm | — | — | May 10 | — | Jul 12 – Aug 30 | 60–70 |
| Lemon Thyme | — | — | May 10 | — | Jul 19 – Sep 20 | 70–90 |
| Lovage | — | — | May 10 | — | Jul 19 – Sep 20 | 70–90 |
| Mint | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Oregano | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Parsley | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 28 – Aug 30 | 60–80 |
| Rue | — | — | May 10 | — | Jul 19 – Sep 20 | 70–90 |
| Sage | — | — | May 10 | — | Jul 26 – Sep 20 | 75–90 |
| Savory | — | — | May 10 | — | Jul 5 – Aug 30 | 50–70 |
| Sorrel | Mar 29 | Apr 19 | Apr 26 | Jul 29 | Jun 7 – Aug 9 | 40–60 |
| Tarragon | — | — | May 10 | — | Jul 12 – Sep 20 | 60–90 |
| Thai Basil | Mar 15 | May 10 | May 17 | — | Jul 12 – Sep 13 | 50–75 |
| Thyme | — | — | May 10 | — | Jul 19 – Sep 20 | 70–90 |
| Valerian | — | — | May 10 | — | Sep 13 – Oct 25 | 120–180 |
🌸 Flowers to Grow in Sauk County
51 flowers that grow well in Zone 5a with planting dates for Sauk County.
Show all 51 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 15 | May 10 | May 10 | — | Jul 5 – Sep 27 | 60–75 |
| Alliums | — | — | — | Aug 26 | Sep 30 – Oct 28 | 28–42 |
| Anemones | Apr 5 | — | May 3 | — | Jun 14 – Jul 12 | 90–120 |
| Astilbe | Mar 1 | — | May 17 | — | Aug 2 – Oct 4 | 70–100 |
| Bachelor's Button | Mar 22 | Apr 12 | May 3 | — | Jul 5 – Sep 13 | 60–90 |
| Begonias | Feb 22 | — | May 10 | — | Jul 19 – Oct 11 | 70–90 |
| Black-eyed Susan | Mar 1 | May 3 | May 17 | — | Aug 2 – Nov 1 | 60–80 |
| Bleeding Hearts | Mar 1 | — | May 17 | — | Jul 12 – Aug 23 | 60–90 |
| Calendula | Mar 22 | Apr 12 | May 3 | — | Jun 21 – Sep 13 | 50–70 |
| Celosia | Mar 29 | May 17 | May 17 | — | Jul 19 – Oct 18 | 60–90 |
| Columbine | Mar 1 | May 17 | May 17 | — | Jul 12 – Aug 23 | 70–100 |
| Coreopsis | Mar 1 | May 10 | May 17 | — | Jul 26 – Nov 1 | 60–80 |
| Cosmos | Apr 5 | May 10 | May 10 | — | Jul 19 – Oct 11 | 60–90 |
| Crocus | — | — | — | Aug 26 | Jul 8 – Jul 29 | 10–20 |
| Daffodils | — | — | — | Aug 26 | Jul 15 – Aug 5 | 20–40 |
| Dahlias | Apr 5 | May 10 | May 10 | — | Aug 2 – Oct 25 | 70–120 |
| Daylily | Mar 1 | — | May 17 | — | Aug 9 – Nov 1 | 60–90 |
| Dianthus | Mar 1 | Apr 5 | Apr 19 | — | Jun 7 – Aug 23 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 1 | May 17 | May 17 | — | Aug 9 – Nov 1 | 70–90 |
| Foxglove | Mar 1 | May 17 | May 17 | — | Jul 12 – Aug 23 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 8 | May 17 | May 17 | — | Jul 26 – Nov 15 | 70–100 |
| Geraniums | Feb 22 | — | May 10 | — | Jul 19 – Oct 11 | 70–100 |
| Gladiolus | — | May 10 | May 10 | — | Aug 2 – Oct 25 | 70–100 |
| Hostas | Feb 22 | — | May 17 | — | Aug 9 – Nov 1 | 60–90 |
| Hyacinths | — | — | — | Aug 26 | Aug 5 – Sep 2 | 14–28 |
| Hydrangeas | Feb 22 | — | May 17 | — | Aug 2 – Oct 18 | 90–150 |
| Impatiens | Mar 8 | — | May 10 | — | Jul 19 – Oct 11 | 60–75 |
| Irises | — | Division | May 17 | — | Jul 12 – Aug 16 | 60–100 |
| Larkspur | — | Apr 5 | — | — | Jun 14 – Aug 9 | 60–90 |
| Lavender | Feb 22 | — | May 24 | — | Aug 2 – Sep 13 | 90–120 |
| Lilies | — | Division | May 17 | — | Jul 26 – Oct 18 | 70–120 |
| Lobelia | Feb 22 | — | Apr 26 | — | Jun 21 – Aug 30 | 70–80 |
| Lupine | Mar 1 | May 17 | May 17 | — | Jul 12 – Aug 23 | 75–100 |
| Marigolds | Mar 22 | May 10 | May 10 | — | Jul 5 – Sep 27 | 50–70 |
| Nasturtium | Apr 5 | May 10 | May 10 | — | Jul 5 – Oct 11 | 55–65 |
| Pansy | Feb 22 | — | May 3 | — | Jun 28 – Aug 23 | 70–90 |
| Peonies | — | Division | May 17 | — | Jul 26 – Sep 6 | 90–120 |
| Petunia | Mar 8 | — | May 10 | — | Jul 19 – Oct 11 | 70–90 |
| Phlox | Mar 1 | May 17 | May 17 | — | Aug 2 – Oct 18 | 80–110 |
| Portulaca | Mar 29 | May 17 | May 17 | — | Jul 5 – Oct 4 | 50–70 |
| Roses | Feb 22 | — | May 17 | — | Aug 2 – Nov 1 | 90–180 |
| Salvia | Mar 1 | — | May 10 | — | Jul 19 – Oct 11 | 70–90 |
| Sedum (Stonecrop) | Mar 1 | — | May 17 | — | Sep 13 – Nov 15 | 60–90 |
| Snapdragon | Feb 22 | Apr 19 | May 3 | — | Jul 12 – Sep 13 | 70–100 |
| Sunflower | Apr 12 | May 10 | May 10 | — | Aug 2 – Oct 11 | 70–100 |
| Sweet Alyssum | Mar 15 | Apr 19 | May 3 | — | Jun 14 – Aug 23 | 45–60 |
| Sweet Pea | Mar 22 | Mar 29 | May 3 | — | Jul 19 – Sep 20 | 65–85 |
| Tulips | — | — | — | Aug 26 | Jul 29 – Aug 19 | 15–30 |
| Vinca (Annual) | Feb 15 | — | May 17 | — | Jul 26 – Oct 11 | 70–90 |
| Yarrow | Mar 1 | May 3 | May 17 | — | Jul 26 – Nov 1 | 60–90 |
| Zinnia | Apr 5 | May 10 | May 10 | — | Jul 19 – Oct 11 | 60–70 |
Monthly Planting Guide for Sauk County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Sauk County.
Frequently Asked Questions
What planting zone is Sauk County, WI?
Sauk 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 Sauk County, WI?
Based on 31 years of NOAA weather station data, the median last spring frost in Sauk County falls around May 3. In 8 out of 10 years, last frost lands between April 22 and May 21 — a 29-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 Sauk County, WI?
The median first fall frost in Sauk County arrives around October 7. In cold years it can arrive as early as September 19; in mild years as late as October 18. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Sauk County?
Sauk County has a frost-free growing season of approximately 157 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 longer by about 0.74 days per decade.
What is the soil like in Sauk County for gardening?
Sauk County has predominantly Silt Loam soil with a pH range of 6–6.7 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Sauk County?
Sauk County has commercial agriculture that includes Corn, Soybeans, Hay, Oats, Sweet Corn. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Sauk County a good location for home gardening?
Sauk County scores 73/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.
Your Sauk County Garden Planner — Free
A 22-page printable planner built for Sauk County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log