Impatiens Planting Guide

June

Your June guide to impatiens

Month-by-month impatiens fundamentals. Your frost dates change the timing, so pick your county for a tailored plan.

Sun partial shade

Water moderate

Days to harvest 60–75

Spacing 10″

How to water impatiens
About an inch of water a week keeps impatiens happy. Check your weather forecast before watering — skip if rain is coming.
Where to put impatiens
South-facing beds are ideal for impatiens. Shade from nearby trees or fences costs real production.
Check your local forecast before planting
Your zone determines the exact week to plant impatiens. Pick your county below and we'll line everything up against your frost dates.

Show me impatiens timing for my zone →

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.

Impatiens walleriana · Flower · Balsaminaceae family · 60–75 days to maturity

Annual Blooms in Summer Pollinator-friendly

Why it matters: If you're just starting a flower garden in your area, Impatiens is a forgiving first pick. It tolerates imperfect soil, mild drought, and the occasional missed watering. The reward: weeks (sometimes months) of continuous color.

Get Your Personalized Impatiens Planting Dates

Enter your ZIP code to see exact planting dates, soil compatibility, and growing tips specific to your county.

Where Can You Grow Impatiens?

Zone Compatibility for Impatiens Zones 2a – 11b

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Ideal (data available) Suitable Marginal Not recommended

Planting Dates by Zone

Zone	Start Indoors	Direct Sow	Transplant	Bloom
Zone 2a	Mar 21	—	Jun 13	Sep 5 – Sep 26
Zone 2b	Mar 13	—	Jun 5	Aug 21 – Sep 25
Zone 3a	Mar 13	—	May 29	Aug 14 – Sep 25
Zone 3b	Mar 8	—	May 24	Aug 9 – Sep 27
Zone 4a	Mar 4	—	May 20	Aug 5 – Sep 30
Zone 4b	Feb 27	—	May 15	Jul 31 – Oct 2
Zone 5a	Feb 28	—	May 2	Jul 11 – Oct 3
Zone 5b	Feb 21	—	Apr 25	Jul 4 – Oct 3
Zone 6a	Feb 13	—	Apr 17	Jun 26 – Oct 2
Zone 6b	Feb 6	—	Apr 10	Jun 19 – Oct 2
Zone 7a	Jan 28	—	Apr 1	Jun 10 – Sep 30
Zone 7b	Jan 21	—	Mar 18	May 27 – Sep 30
Zone 8a	Jan 11	—	Mar 8	May 17 – Oct 4
Zone 8b	Dec 31	—	Feb 18	Apr 29 – Sep 30
Zone 9a	Dec 16	—	Jan 27	Apr 7 – Sep 22
Zone 9b	Nov 30	—	Jan 4	Mar 15 – Sep 13
Zone 10a	Nov 6	—	Nov 27	Feb 5 – Aug 20
Zone 10b	Nov 6	—	Nov 20	Jan 29 – Aug 27
Zone 11a	Nov 6	—	Nov 6	Jan 15 – Aug 27
Zone 11b	Nov 6	—	Oct 30	Jan 8 – Sep 3

Why are some columns showing "—"?

Direct Sow shows "—" because Impatiens benefits from being started indoors first, then transplanted after the last frost.

How to Plant Impatiens

10"

Between Plants

12"

Between Rows

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

Moderate — regular watering

Water when the top inch of soil feels dry. Consistent moisture produces the best results.

🧪 Soil pH

6 – 6.5

Prefers neutral to slightly acidic soil — ideal for most garden beds.

🗺️ Hardiness Zones

Zone 2a – 11b

📅 Days to Maturity

60–75 days

Quick-growing crop. Multiple plantings per season are possible.

👪 Plant Family

Balsaminaceae

Rotate with other families yearly to prevent soil-borne diseases. Don't plant in the same spot where Balsaminaceae family crops grew last year.

Succession Planting Impatiens

Impatiens matures in just 60–75 days, making it ideal for succession planting. In a typical 180-day growing season, you can get up to 3 successive plantings by sowing every 6.9 weeks.

Your actual succession count depends on your local frost dates. Enter your ZIP code to get personalized succession planting dates for your area.

Companion Planting for Impatiens

✅ Good Companions

Hostas Ferns Caladiums Begonias

Check more combinations with our Companion Planting Checker →

Growing Tips for Impatiens

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.

Saving Impatiens Seeds

Recommended for Your Garden

🌱

Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

🧪

Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

🏷️

Garden Plant Markers $6-12

Keep your garden organized with durable, weather-resistant plant labels.

Reader favourite

Seed Saving & Storage Guide

$27 $157 value

Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.

200 plants, step-by-step: life cycle, pollination type, isolation
Exact temperature + humidity ranges that keep seeds viable
Bonus: searchable Google Sheets tracker + custom GPT assistant

Save a lifetime of seed money →

Impatiens by State

Frequently Asked Questions

How long does it take to grow Impatiens?

Impatiens (Impatiens walleriana) takes 60 to 75 days from planting to harvest. Exact timing depends on your variety, growing conditions, and USDA zone.

What zones can Impatiens grow in?

Impatiens can be grown in USDA zones 2a through 11b. Use the planting calendar above to find the exact dates for your zone.

How much sun does Impatiens need?

Growing Impatiens requires Partial Shade (3-6 hours), Moderate — regular watering, and soil pH of 6 to 6.5.