When to plant Daylily in Johnson County, IN
Plant Daylily in Johnson County, between April 19 and May 3 — the only viable window. Zone 6a's short season (193 frost-free days) rules out a fall crop.
When to Plant Daylily in Johnson County, IN
Your June game plan for Johnson County, Indiana
A quick June briefing for Johnson County, Indiana gardeners — what's urgent, what's next, and what can wait.
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Indoor seed-starting week for daylily
Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.
Looking ahead to July
- First harvests: daylily
Hemerocallis (Daylily) is one of the most adaptable and trouble-free perennials in cultivation. Though each flower lasts only a single day, established clumps produce dozens to hundreds of buds per stem, delivering weeks of continuous color through summer. Modern hybrids extend the range from pale cream and melon through deep burgundy and purple. Nearly indestructible once established — tolerating poor soil, drought, competition, and neglect — daylilies form dense spreading clumps that effectively suppress weeds. An excellent low-maintenance choice for slopes, borders, and naturalized areas.
Johnson County, Indiana is in USDA Zone 6a. The average last spring frost is April 12 and the first fall frost is October 22, giving you a growing season of approximately 193 days.
At an elevation of 1,324 feet, Johnson County receives approximately 36.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Daylily during the growing season.
Johnson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-7
Drainage
Well Drained
Daylily 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 Johnson County
How your county's soil matches Daylily's growing requirements.
Soil pH
Your soil pH (6.2–7.0) is within Daylily's preferred range (6.0–7.0).
Soil Texture
The silt loam soil in Johnson County is excellent for Daylily — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is excellent (5.1%) — Daylily will thrive.
How to Plant Daylily
Succession Planting Daylily
Sow every 6.9 weeks. Last sowing by Jul 24 to harvest before frost.
Daylily Water Budget
Monthly Watering Guide for Daylily
Daylily 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 | Daylily Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | — | 2.3" | 0" | ❄️ Dormant |
| Apr | 2.2" | 3.4" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 4.6" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 4.1" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 4" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 3.1" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 2.9" | 0" | ✅ Rainfall sufficient |
| Nov | — | 2.2" | 0" | ❄️ Dormant |
| Dec | — | 2.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Johnson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Daylily 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.
Daylily Planting Timeline — Johnson County, IN
Daylily Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 8 | Feb 8 – Feb 22 |
| Transplant Outdoors | April 19 | Apr 19 – May 3 |
| Bloom | July 5 | Jul 5 – Oct 18 |
Plant 1" deep · 24" apart · Rows 30" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | — |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: ideal
🗺️ USDA Zone
Zone 6a
📆 Growing Season
193 days in Johnson County
Growing Tips for Daylily in Johnson County
Direct sow Daylily outdoors after April 12 in Johnson County when soil has warmed and frost danger has passed.
General growing tips
Daylilies are most commonly propagated by division rather than seed; cultivar seeds do not come true. Transplant bare-root or potted divisions in early spring or fall, setting crowns no more than 1 inch below soil level. If starting from seed (species types only), start indoors 8–10 weeks before last frost. Established plants are extremely drought-tolerant; moderate water during bloom period improves flower quality. Divide crowded clumps every 3–5 years in early spring or fall to maintain vigor. In warm zones (8+), some cultivars are evergreen; in cold zones, foliage dies back each fall. Year 2+ plants bloom most heavily — first-year transplants may produce limited flowers.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Daylily in Other Locations
Frequently Asked Questions
When should I plant Daylily in Johnson County, IN?
Johnson County is in Zone 6a with an average last frost of April 12. Plan your Daylily planting based on this frost date — see the calendar above for exact timing.
What planting zone is Johnson County, IN?
Johnson County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 12 and first fall frost is October 22.
When should I plant Daylily in Johnson County, IN?
In Johnson County, IN, plant Daylily after the last frost (around April 12) and before the first frost (around October 22). Best results when soil holds above 50°F.
What growing zone is Johnson County, IN for Daylily?
Johnson County sits in USDA Zone 6a. Daylily grows reliably in zones 3a through 10b, so it's a good fit here.
Can Daylily grow in Johnson County's climate?
Yes — Daylily grows well in Johnson County's temperate climate. Johnson County averages a 193-day frost-free season, with last frost around April 12 and first frost around October 22.
Your Johnson County Garden Planner — Free
A 22-page printable planner built for Johnson 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.