When to plant Irises in Drew County County,
In Drew County County, Irises is a single-season spring crop — there's no second fall window. Plant March 11–March 25 for an 100-day harvest, finishing well before the November 10 first frost.
When to Plant Irises in Drew County, AR
June to-do list for Drew County, Arkansas
If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.
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Collect irises at their peak
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
Bearded Iris (Iris germanica) are among the most regal flowers of the late-spring garden, producing elegantly ruffled blooms in virtually every color of the rainbow — often in spectacular bicolor combinations. Named for the fuzzy "beard" on the lower falls (petals), bearded irises grow from thick horizontal rhizomes that spread to form dense clumps over time. Individual blooms last only a few days, but a well-established clump produces successive flowers over 3–4 weeks. Many are intensely fragrant. Native iris species including blue flag iris (I. versicolor) and Virginia iris (I. virginica) are excellent choices for wet or native garden settings.
Drew County, Arkansas is in USDA Zone 8b. The average last spring frost is March 18 and the first fall frost is November 10, giving you a growing season of approximately 237 days.
At an elevation of 1,158 feet, Drew County receives approximately 54.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Irises during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Irises root diseases.
Drew County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-6.8
Drainage
Well Drained
Irises 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 Drew County
How your county's soil matches Irises's growing requirements.
Soil pH
Your soil pH (5.6–6.8) is more acidic than Irises prefers (6.8–7.0). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Drew County is excellent for Irises — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Irises.
How to Plant Irises
Succession Planting Irises
Sow every 6.9 weeks. Last sowing by Aug 02 to harvest before frost.
Irises Water Budget
Monthly Watering Guide for Irises
Irises needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Irises Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.8" | 0" | ❄️ Dormant |
| Feb | — | 3.9" | 0" | ❄️ Dormant |
| Mar | 2.2" | 5.2" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 4.5" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 5" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 5.7" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 5.5" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 3.7" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.4" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Drew County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Irises 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.
Irises Planting Timeline — Drew County, AR
Irises Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | March 11 | Mar 11 – Mar 25 |
| Bloom | April 29 | Apr 29 – Jun 3 |
Plant 0.5" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Transplant Outdoors |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
60–100 days
🧪 Soil pH
Needs 6.8–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8b
📆 Growing Season
237 days in Drew County
Growing Tips for Irises in Drew County
Direct sow Irises outdoors after March 18 in Drew County when soil has warmed and frost danger has passed.
General growing tips
Plant rhizomes in late summer to early fall (July–September) after bloom season, setting them horizontally with the top of the rhizome at or just slightly below soil surface — never deeply buried. Full sun is essential for best bloom; at least 6 hours. Well-drained soil is critical; wet rhizomes rot in winter. After bloom, remove flower stalks but leave foliage until it browns in fall. Divide every 3–5 years in late summer when clumps become congested (crowded rhizomes stop blooming). Iris borer is the primary pest — remove and destroy affected fans. Year 2+ after division delivers the most bloom; freshly divided rhizomes may have limited or no bloom in their first season.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Irises in Other Locations
Frequently Asked Questions
When should I plant Irises in Drew County, AR?
Drew County is in Zone 8b with an average last frost of March 18. Plan your Irises planting based on this frost date — see the calendar above for exact timing.
What planting zone is Drew County, AR?
Drew County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 18 and first fall frost is November 10.
When should I plant Irises in Drew County County, ?
In Drew County County, , plant Irises after the last frost (around March 18) and before the first frost (around November 10). Best results when soil holds above 50°F.
What growing zone is Drew County County, for Irises?
Drew County County sits in USDA Zone 8b. Irises grows reliably in zones 3a through 9b, so it's a good fit here.
Can Irises grow in Drew County County's climate?
Yes — Irises grows well in Drew County County's temperate climate. Drew County County averages a 237-day frost-free season, with last frost around March 18 and first frost around November 10.
Your Drew County Garden Planner — Free
A 22-page printable planner built for Drew County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.