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When to plant Lilies in Pulaski County, IL

Plant Lilies in Pulaski County during the brief April 16–April 30 window. With 196 frost-free days, fall plantings can't mature before October 22.

When to Plant Lilies in Pulaski County, IL

Pulaski County, Illinois Zone 7a August

Your August game plan for Pulaski County, Illinois

Each item below is timed to Pulaski County, Illinois's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 9
Avg. first frost October 22
Soil temp (4") 82°F
Watering Moderate
Pest pressure High
Daylight 13.4 hrs
  1. Collect lilies at their peak

    If you can't use it all right away, check the food-preservation section of your planner.

Looking ahead to September
  • First harvests: lilies

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Lilies (Lilium spp.) are among the most impressive summer-blooming bulbs, delivering bold, upward- or outward-facing trumpet blooms on tall stems from June through August. Asiatic hybrids are the most cold-hardy, earliest to bloom, and easiest to grow; Oriental hybrids bloom later with intensely fragrant, larger flowers. Orienpet (OT) hybrids combine the hardiness of Asiatics with the fragrance and size of Orientals. True lilies (not to be confused with daylilies, which are Hemerocallis) form scaly bulbs that persist and multiply underground, returning reliably each year with increasingly large clumps.

Pulaski County, Illinois is in USDA Zone 7a. The average last spring frost is April 9 and the first fall frost is October 22, giving you a growing season of approximately 196 days.

At an elevation of 1,244 feet, Pulaski County receives approximately 30.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Lilies during the growing season.

Perennial Blooms in Summer Pollinator-friendly Good for cutting Fragrant
Pulaski County, IL (Zone 7a) Moderate season
196 days
Last Spring Frost April 9
196 growing days
First Fall Frost October 22

Pulaski County Soil Profile

Soil Type

Silt Loam

Soil pH

6-7.1

Drainage

Well Drained

Lilies Planting Risk Windows

Early Start (70% safe) ✓ Fits season (8 days to spare)
Transplant: Apr 10 🌸 Bloom: Jun 19 – Oct 9
Recommended (50%) ✓ Fits season (7 days to spare)
Transplant: Apr 16 🌸 Bloom: Jun 25 – Oct 15
Safe Start (90%) ✓ Fits season (6 days to spare)
Transplant: Apr 28 🌸 Bloom: Jul 7 – Oct 27

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 Pulaski County

How your county's soil matches Lilies's growing requirements.

Soil pH

Your soil pH (6.0–7.1) is more alkaline than Lilies prefers (6.0–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

The silt loam soil in Pulaski County is excellent for Lilies — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Lilies.

How to Plant Lilies

5"
Planting Depth
12"
Between Plants
18"
Between Rows

Succession Planting Lilies

3
successive plantings in your 196-day season

Sow every 8 weeks. Last sowing by Jun 24 to harvest before frost.

Lilies Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 707 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Lilies

Lilies needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Lilies Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 4.3" 2.8" 1.5" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4.1" 0.2" 💧 Light watering
Jul 4.3" 3.5" 0.8" 💧 Light watering
Aug 4.3" 3.3" 1" 💧 Light watering
Sep 4.3" 2.8" 1.5" 💧 Light watering
Oct 4.3" 2.6" 1.7" 💧 Light watering
Nov 2" 0" ❄️ Dormant
Dec 1.4" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Pulaski County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Lilies 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.

Lilies needs ~1,306 GDD — county provides 2,695 GDD Excellent fit

Lilies Planting Timeline — Pulaski County, IL

Lilies Planting Calendar

Activity When Date Range
Transplant Outdoors April 16 Apr 16 – Apr 30
Bloom June 25 Jun 25 – Oct 15

Plant 5" deep · 12" apart · Rows 18" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May
June Bloom
July Bloom
August Bloom
September Bloom
October Bloom
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

70–120 days

🧪 Soil pH

Needs 6–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

196 days in Pulaski County

Growing Tips for Lilies in Pulaski County

Direct sow Lilies outdoors after April 09 in Pulaski County when soil has warmed and frost danger has passed.

General growing tips

Plant bulbs in fall (preferred, September–October) or spring, setting them 3 times their diameter deep (typically 4–6 inches) with the pointed end up. Lilies need excellent drainage — they will rot in wet or heavy clay soils. Site with full sun on stems and blooms but cool, shaded soil at the base (ground cover or shallow-rooted annuals at their feet is ideal). Remove spent blooms but leave stems and foliage until they yellow naturally, as the bulb needs the foliage to photosynthesize and rebuild energy stores. Red lily beetle is a serious pest in the Northeast and Pacific Northwest; inspect plants regularly and hand-pick adults and larvae. Never plant Oriental or Asiatic lilies near cats — all Lilium species are highly toxic to cats. Year 2+ bulbs produce the most stems and largest blooms.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lilies in Pulaski County, IL?

Pulaski County is in Zone 7a with an average last frost of April 9. Plan your Lilies planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pulaski County, IL?

Pulaski County, Illinois is in USDA Hardiness Zone 7a. The average last spring frost is April 9 and first fall frost is October 22.

When should I plant Lilies in Pulaski County, IL?

In Pulaski County, IL, plant Lilies after the last frost (around April 9) and before the first frost (around October 22). Best results when soil holds above 50°F.

What growing zone is Pulaski County, IL for Lilies?

Pulaski County sits in USDA Zone 7a. Lilies grows reliably in zones 3a through 9a, so it's a good fit here.

Can Lilies grow in Pulaski County's climate?

Yes — Lilies grows well in Pulaski County's temperate climate. Pulaski County averages a 196-day frost-free season, with last frost around April 9 and first frost around October 22.

🌱

Your Pulaski County Garden Planner — Free

A 22-page printable planner built for Pulaski County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Pulaski County, IL. Local conditions may vary. Last updated: August 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.