St. Cloud, Minnesota Garden Guide: Planting Dates, Frost Dates and Growing Season
In St. Cloud, gardeners usually see the last spring frost around May 3 and the first fall frost around October 7, leaving about 157 frost-free days in a typical year. That gives gardeners more room for long-season crops, succession planting, and later sowings.
Growing Season Snapshot
These season boundaries are climate normals, not a forecast. A 50% frost date means a 32°F frost arrives by that date in about half of years — and later in about half. Treat these dates as planning anchors, not guarantees.
St. Cloud Planting Calendar
A practical guide to when planting usually works in St. Cloud. These windows are based on climate normals (not a forecast) and line up with the 50% last spring frost and typical early-season heat.
| Crop | Planting Window | Method | Best Variety | Local Fit |
|---|---|---|---|---|
| Cool-season / early window Cold-tolerant crops that usually handle cooler spring conditions better. | ||||
| Peas | April 5 – April 19 | direct sow | Little Marvel | Excellent fit |
| Spinach | April 5 – April 19 | direct sow | Space | Excellent fit |
| Kale | April 9 – April 29 | direct sow / transplant | Winterbor | Excellent fit |
| Beets | April 12 – April 26 | direct sow | Detroit Dark Red | Excellent fit |
| Carrots | April 12 – April 26 | direct sow | Bolero | Excellent fit |
| Lettuce | April 12 – April 26 | direct sow / transplant | Buttercrunch | Excellent fit |
| Onions | April 12 – April 26 | sets / transplants | Redwing | Excellent fit |
| Strawberries | April 12 – April 26 | plant crowns / transplants | Seascape | Excellent fit |
| Swiss Chard | April 13 – May 3 | direct sow / transplant | Bright Lights | Excellent fit |
| Broccoli | April 19 – May 3 | transplant | Packman | Excellent fit |
| Cabbage | April 19 – May 3 | transplant | Stonehead | Excellent fit |
| Cauliflower | April 19 – May 3 | transplant | Snow Crown | Excellent fit |
| Potatoes | April 19 – May 3 | plant seed potatoes | Kennebec | Excellent fit |
| Main warm-season window Crops that usually do best once frost risk fades and the season starts opening up more fully. | ||||
| Beans | May 3 – May 17 | direct sow | Contender | Excellent fit |
| Sweet Corn | May 8 – May 18 | direct sow | Bodacious | Excellent fit |
| Basil | May 12 – May 22 | direct sow / transplant | Thai Basil | Excellent fit |
| Cucumbers | May 12 – May 22 | direct sow / transplant | Marketmore 76 | Excellent fit |
| Zucchini | May 12 – May 22 | direct sow / transplant | Black Beauty | Excellent fit |
| Melons | May 12 – May 22 | direct sow / transplant | Athena | Strong fit |
| Pumpkin | May 12 – May 22 | direct sow / transplant | Howden | Strong fit |
| Tomatoes | May 12 – May 22 | transplant | Celebrity | Strong fit |
| Watermelons | May 12 – May 22 | direct sow / transplant | Golden Midget | Strong fit |
| Winter Squash | May 12 – May 22 | direct sow / transplant | Honey Nut | Strong fit |
| Peppers | May 19 – May 29 | transplant | California Wonder | Strong fit |
How to use this: aim for the earlier part of each window for the most reliable results. Later planting can still work, but it usually depends more on variety maturity, warmer microclimates, and simple protection like row cover or low tunnels.
Common Timing Mistakes
These patterns show up again and again in St. Cloud — especially in typical years.
- Waiting too long after last frost to plant warm-season crops, which compresses harvest timing.
- Relying on calendar dates instead of crop maturity and typical frost timing.
Missed Your Planting Window? What Can You Still Grow?
This table shows what can still mature from several later-season planting dates in St. Cloud. It compares the growing degree days still typically available after each checkpoint with the heat each crop usually needs to finish, then applies a 15% safety margin to separate crops that usually still fit from ones that are more borderline.
| Crop | Heat Units | May 15 | Jun 1 | Jul 1 | Aug 1 |
|---|---|---|---|---|---|
| Spinach | 450 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Lettuce | 500 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Strawberry | 600 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Pea | 600 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Beet | 650 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Basil | 700 (base 50) | ✅ | ✅ | ✅ | ✅ |
| Kale | 700 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Zucchini | 750 (base 50) | ✅ | ✅ | ✅ | ⚠️ |
| Carrot | 750 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Swiss chard | 750 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Cucumber | 800 (base 50) | ✅ | ✅ | ✅ | ⚠️ |
| Broccoli | 900 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Bean | 900 (base 50) | ✅ | ✅ | ✅ | ❌ |
| Cabbage | 1000 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Cauliflower | 1000 (base 40) | ✅ | ✅ | ✅ | ✅ |
| Sweet corn | 1100 (base 50) | ✅ | ✅ | ✅ | ❌ |
| Potato | 1100 (base 45) | ✅ | ✅ | ✅ | ⚠️ |
| Melon | 1200 (base 50) | ✅ | ✅ | ✅ | ❌ |
| Tomato | 1200 (base 50) | ✅ | ✅ | ✅ | ❌ |
| Pepper | 1300 (base 50) | ✅ | ✅ | ⚠️ | ❌ |
| Onion | 1300 (base 45) | ✅ | ✅ | ✅ | ❌ |
| Winter squash | 1300 (base 50) | ✅ | ✅ | ⚠️ | ❌ |
| Pumpkin | 1300 (base 50) | ✅ | ✅ | ⚠️ | ❌ |
| Watermelon | 1350 (base 50) | ✅ | ✅ | ⚠️ | ❌ |
Climate normals GDD planning
Compare your season’s typical heat accumulation against crop requirements before first fall frost.
Check Crop Maturity and Timing in St. Cloud
Enter a ZIP / Postal Code in St. Cloud and your planting date to see whether different crops can typically mature before first fall frost.
How the Growing Season Works in St. Cloud
St. Cloud is mostly a timing-and-variety season. Reliable results usually come from planting on time, matching maturity to the frost window, and making good use of the remaining summer heat.
- Start on time: early establishment is often the biggest controllable factor for warm-season success.
- Match crops to the window: dependable harvests usually come from realistic maturity timing, not optimistic timing.
- Use late summer well: fast greens, roots, and compact crops are often the best fit for a second round.
Late-summer note: there is often still meaningful heat left around early August, so second plantings of faster crops can still be worthwhile.
Remaining Season Heat in St. Cloud (Base 50 GDD)
Growing Degree Days (Base 50°F) measure heat accumulation. “Remaining GDD” shows how much usable heat is typically still available from a given date onward in a normal season.
| Planting date | Base | Typical GDD still available |
|---|---|---|
| May 15 | 50 | 2103 |
| June 1 | 50 | 1953 |
| July 1 | 50 | 1473 |
| August 1 | 50 | 845 |
Use these values to judge whether a crop or variety still has enough heat left after planting. This is especially helpful for later sowings, shorter-maturity choices, and deciding whether a second round is realistic.
How Gardeners Adapt
Experienced gardeners in St. Cloud usually adjust their timing and crop choices to match how the season actually behaves, not just the calendar.
- Planting warm-season crops promptly once frost risk fades.
- Using row cover or low tunnels to smooth out temperature swings early and late in the season.
- Succession planting fast crops to keep beds productive through summer.
- Watching local conditions closely and adjusting timing year by year.
St. Cloud Garden Planning Chart
A practical “typical year” for planning. Use it as a baseline, then adjust for microclimates and variety maturity.
| Stage | What it usually means |
|---|---|
| Early season | Start cold-tolerant crops, prep beds, and pay more attention to soil warmth and night temperatures than to the calendar alone. |
| Main planting | Around May 3, the main planting push usually begins as frost risk fades. Warm-season crops generally perform best when they get established promptly. |
| Peak growth | This is when water, fertility, spacing, and pest pressure have the biggest effect on final yield. |
| Late-summer decisions | There is often enough late-season heat left for a meaningful second round of quick crops. |
| Finish window | Plan to have frost-sensitive crops mostly wrapped up by October 7. Cooling nights often slow crops before the first real frost arrives. |
Typical season length: 157 frost-free days between the median spring and fall frost dates.
Crop Guides for St. Cloud
Published crop-specific planting guides for St. Cloud, ordered from best fit to highest risk.
Excellent fit
Beans
St. Cloud usually gives beans enough season that maturity is rarely the hard part.
Broccoli
This crop usually has enough season here that maturity is rarely the hard part.
Cabbage
Very early to late varieties usually fit comfortably here.
Carrots
Carrots are usually one of the easier crops to grow here.
Cauliflower
St. Cloud usually gives cauliflower enough season that maturity is rarely the hard part.
Kale
This crop usually has enough season here that maturity is rarely the hard part.
Lettuce
Very early to mid-season varieties usually fit comfortably here.
Peas
St. Cloud usually gives peas enough season that maturity is rarely the hard part.
Spinach
This crop usually has enough season here that maturity is rarely the hard part.
Strawberries
Very early to mid-season varieties usually fit comfortably here.
Sweet Corn
Sweet corn is usually one of the easier crops to grow here.
Swiss Chard
St. Cloud usually gives swiss chard enough season that maturity is rarely the hard part.
Strong fit
Peppers
St. Cloud usually gives peppers enough season for reliable maturity.
Tomatoes
This crop usually gives gardeners some real room to work with.
Watermelons
Very early to mid-season varieties usually fit well here.
Winter Squash
Winter squash is usually a dependable crop choice here.
Looking for broader guidance? See planting timing across Minnesota