When to plant Cress in Sioux County, IA
Cress planted in Sioux County between April 17 and May 8 matures in 14–21 days — well before the October 3 first frost. A second sowing from July 25 to August 8 extends the harvest into fall.
When to Plant Cress in Sioux County, IA
Garden cress is one of the fastest-growing edibles, producing peppery sprouts in as little as two weeks. It is excellent for microgreens and garnishes.
Sioux County, Iowa is in USDA Zone 5a. The average last spring frost is May 1 and the first fall frost is October 3, giving you a growing season of approximately 155 days.
At an elevation of 1,212 feet, Sioux County receives approximately 39.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Cress to ensure they mature before fall.
Sioux County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Cress Planting Timeline — Sioux County, IA
Cress Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 27 | Mar 27 – Apr 10 |
| Transplant Outdoors | May 1 | May 1 – May 15 |
| Direct Sow | April 17 | Apr 17 – May 8 |
| Harvest | May 15 | May 15 – Jun 5 |
| Fall Sowing | July 25 | Jul 25 – Aug 8 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow Harvest |
| June | Harvest |
| July | Fall Sowing |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
14–21 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
155 days in Sioux County
Growing Tips for Sioux County
Sow seeds thickly on moist soil or paper towels. Keep moist and harvest when 2-3 inches tall. Succession sow every few days for continuous supply. Grows well indoors year-round.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Cress in Other Locations
Frequently Asked Questions
When should I plant Cress in Sioux County, IA?
Sioux County is in Zone 5a with an average last frost of May 1. Plan your Cress planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sioux County, IA?
Sioux County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is May 1 and first fall frost is October 3.
When should I plant Cress in Sioux County, IA?
In Sioux County, IA, plant Cress after the last frost (around May 1) and before the first frost (around October 3). Best results when soil holds above 50°F.
What growing zone is Sioux County, IA for Cress?
Sioux County sits in USDA Zone 5a. Cress grows reliably in zones 2a through 11b, so it's a good fit here.
Can Cress grow in Sioux County's climate?
Yes — Cress grows well in Sioux County's temperate climate. Sioux County averages a 155-day frost-free season, with last frost around May 1 and first frost around October 3.
Your Sioux County Garden Planner — Free
A 22-page printable planner built for Sioux 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.