When to Plant Cress in Ulster County, NY
Top priorities for Ulster County, New York gardeners in May
May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Ulster County, New York.
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Time to start cress inside
A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.
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Harvest cress as they ripen
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
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.
Ulster County, New York is in USDA Zone 6a. The average last spring frost is April 24 and the first fall frost is October 23, giving you a growing season of approximately 182 days.
At an elevation of 1,121 feet, Ulster County receives approximately 39.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Cress during the growing season.
Ulster County Soil Profile
Soil Type
Silt Loam
Soil pH
4.8-6.8
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Soil Compatibility in Ulster County
How your county's soil matches Cress's growing requirements.
Soil pH
Your soil pH (4.8–6.8) is more acidic than Cress prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Ulster County is excellent for Cress — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.7%). Annual compost additions will help Cress.
How to Plant Cress
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Cress
Sow every 1.6 weeks. Last sowing by Oct 02 to harvest before frost.
For a dedicated fall crop, sow by Aug 14.
Plant Water Budget
Monthly Watering Guide for Cress
Cress needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Cress Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.4" | 0" | ❄️ Dormant |
| Feb | — | 2.4" | 0" | ❄️ Dormant |
| Mar | — | 3.2" | 0" | ❄️ Dormant |
| Apr | 4.3" | 2.9" | 1.4" | 💧 Light watering |
| May | 4.3" | 4" | 0.3" | 💧 Light watering |
| Jun | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Jul | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Sep | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Oct | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Nov | — | 2.7" | 0" | ❄️ Dormant |
| Dec | — | 2.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Ulster County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cress Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Cress Planting Timeline — Ulster County, NY
Cress Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 20 | Mar 20 – Apr 3 |
| Transplant Outdoors | April 24 | Apr 24 – May 8 |
| Direct Sow | April 10 | Apr 10 – May 1 |
| Harvest | May 8 | May 8 – May 29 |
| Fall Sowing | August 14 | Aug 14 – Aug 28 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow Harvest |
| June | — |
| July | — |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
14–21 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 6a
📆 Growing Season
182 days in Ulster County
Growing Tips for Cress in Ulster County
Direct sow Cress outdoors after April 24 in Ulster County when soil has warmed and frost danger has passed.
Your generous 182.0-day season in Ulster County allows multiple plantings of Cress. Sow every 7.0 days for continuous harvest.
Common pests for Cress in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
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 Ulster County, NY?
Ulster County is in Zone 6a with an average last frost of April 24. Plan your Cress planting based on this frost date — see the calendar above for exact timing.
What planting zone is Ulster County, NY?
Ulster County, New York is in USDA Hardiness Zone 6a. The average last spring frost is April 24 and first fall frost is October 23.
Your Ulster County Garden Planner — Free
A 24-page printable planner built for Ulster County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.