When to plant Impatiens in Alachua County, FL
Alachua County's 278-day season only supports one Impatiens planting per year. Sow between February 9 and February 23 for the best chance at full maturity before November 27.
When to Plant Impatiens in Alachua County, FL
Your June game plan for Alachua County, Florida
Welcome to June in Zone 9a. These are the moves that will have the biggest impact on your growing season.
-
Collect impatiens at their peak
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
Before July arrives, get these ready
- First harvests: impatiens
Impatiens (Impatiens walleriana) are the go-to annual for shaded beds and containers. They produce a continuous carpet of flat-faced blooms from transplant until frost, needing little deadheading. Their preference for consistent moisture and part-shade makes them ideal under trees and along north-facing borders.
Alachua County, Florida is in USDA Zone 9a. The average last spring frost is February 23 and the first fall frost is November 27, giving you a growing season of approximately 277 days.
At an elevation of 398 feet, Alachua County receives approximately 50 inches of rainfall annually with predominantly sand soil. Summer highs average 99°F, so Impatiens may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Impatiens will need more frequent watering and organic matter to retain nutrients.
Alachua County Soil Profile
Soil Type
Sand
Soil pH
5.2-6.1
Drainage
Well Drained
Impatiens 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 Alachua County
How your county's soil matches Impatiens's growing requirements.
Soil pH
Your soil pH (5.2–6.1) is more acidic than Impatiens prefers (6.0–6.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Alachua County warms quickly in spring but drains fast. Impatiens will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Impatiens.
Organic Matter
Organic matter is low (1.6%). Add 2-3 inches of compost before planting Impatiens.
How to Plant Impatiens
Succession Planting Impatiens
Sow every 6.9 weeks. Last sowing by Sep 13 to harvest before frost.
Impatiens Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Impatiens
Impatiens needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Impatiens Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.6" | 0" | ❄️ Dormant |
| Feb | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Mar | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Apr | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| May | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| Jun | 4.3" | 7.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 7.4" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 6.3" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 6.8" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Nov in Alachua County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Impatiens 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.
Impatiens Planting Timeline — Alachua County, FL
Impatiens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 29 | Dec 29 – Jan 12 |
| Transplant Outdoors | February 9 | Feb 9 – Feb 23 |
| Bloom | April 20 | Apr 20 – Oct 5 |
· 10" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors |
| March | — |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | Start Indoors |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
60–75 days
🧪 Soil pH
Needs 6–6.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
277 days in Alachua County
Growing Tips for Impatiens in Alachua County
Direct sow Impatiens outdoors after February 23 in Alachua County when soil has warmed and frost danger has passed.
Sandy soil in Alachua County dries quickly — mulch Impatiens with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 99°F in Alachua County, provide afternoon shade for Impatiens and water deeply in the morning.
General growing tips
Start seeds indoors 8–10 weeks before last frost at 70–75°F; germination requires light — do not cover seeds. Transplant after last frost once nights consistently exceed 50°F. Water regularly — wilting causes bud drop and they rarely fully recover the same flush. Watch for impatiens downy mildew (IDM); consider New Guinea impatiens as a resistant alternative in affected regions. Pinch tips at planting to encourage branching.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Impatiens in Other Locations
Frequently Asked Questions
When should I plant Impatiens in Alachua County, FL?
Alachua County is in Zone 9a with an average last frost of February 23. Plan your Impatiens planting based on this frost date — see the calendar above for exact timing.
What planting zone is Alachua County, FL?
Alachua County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is February 23 and first fall frost is November 27.
When should I plant Impatiens in Alachua County, FL?
In Alachua County, FL, plant Impatiens after the last frost (around February 23) and before the first frost (around November 27). Best results when soil holds above 50°F.
What growing zone is Alachua County, FL for Impatiens?
Alachua County sits in USDA Zone 9a. Impatiens grows reliably in zones 2a through 11b, so it's a good fit here.
Can Impatiens grow in Alachua County's climate?
Yes — Impatiens grows well in Alachua County's temperate climate. Alachua County averages a 278-day frost-free season, with last frost around February 23 and first frost around November 27.
Your Alachua County Garden Planner — Free
A 22-page printable planner built for Alachua County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.