Flower Garden · Seed to Bloom

How to grow impatiens

Grow compact mounds of continuous color for bright shade, filtered-light beds, window boxes, and containers.

Surface sow for lightKeep moisture consistentFavor bright shade
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Vintage botanical illustration of compact multicolor impatiens flowers
Botanical nameImpatiens wallerianaGarden impatiens
Sow depthSurface sowLight aids germination
Germination10–21 days70–75°F
Spacing8–12 inchesMounded plants
Height8–12 inchesTom Thumb habit

Flower profile

Fill bright shade with color from spring to frost.

Impatiens seed is fine and needs light, warmth, and steady moisture to germinate. Once established, compact plants flower generously when protected from harsh afternoon sun and never allowed to dry severely.

Consistent moisture prevents stressImpatiens wilt quickly when dry. Water before repeated wilting, especially in containers, while still avoiding waterlogged soil.

impatiens at a glance

From seed to a full flowering display

01SowSurface of mix02Sprout10–21 days03PinchEncourage branching04PlantAfter frost05FillRounded mound06BloomUntil frost

Planting

Surface sow early and protect delicate seedlings.

Start indoors 10–12 weeks before the last frost. Press seed onto moist mix without covering and give seedlings bright light immediately after emergence.

01

Moisten mix before sowing

Use a fine seed-starting medium and level the surface.

02

Press seed in without covering

Maintain 70–75°F warmth, humidity, and light.

03

Transplant after frost

Space 8–12 inches apart in rich, moisture-retentive soil.

Ongoing care

Keep plants healthy and flowering

Choose bright shade

Morning sun or filtered light supports flowers without scorching foliage.

Keep moisture even

Water before plants wilt, especially in pots and hot weather.

Feed lightly

Compost or dilute balanced fertilizer is enough; excess nitrogen favors leaves.

Maintain airflow

Space plants properly and water at soil level to keep foliage healthier.

Season checkpoints

Follow the plant's visible progress.

10–21 days

Seedlings emerge

6–8 weeks

Plants begin branching

After frost

Plants move outdoors

Early summer

Continuous bloom begins

Bloom and garden use

Let the mound carry the display.

Impatiens are grown primarily for continuous color in beds and containers. Individual flowers drop cleanly, so routine deadheading is usually unnecessary.

  1. Use in shaded containers and borders.
  2. Combine several colors for a full bedding display.
  3. Pinch only if young plants need more branching.

Urban Farmer selections

Grow a compact Tom Thumb color mix

Tom Thumb product imageCompact mix · shade colorTom ThumbA low-growing impatiens mixture for beds, borders, pots, and window boxes.Checking availability…Shop Tom Thumb →

Questions flower gardeners ask

Impatiens growing FAQ

Do impatiens seeds need light to germinate?

Yes. Press them onto the surface and do not cover.

How early should impatiens be started indoors?

Start about 10–12 weeks before the last frost.

How long does germination take?

Usually 10–21 days with warmth and steady moisture.

Can impatiens grow in full shade?

They tolerate shade, but bright filtered light usually produces more flowers.

How much sun can impatiens take?

Morning sun is useful; protect plants from intense afternoon sun.

Why are my impatiens wilting?

Dry soil is common, although root problems in saturated soil can also cause wilt.

Do impatiens need deadheading?

Most garden impatiens shed spent flowers without regular deadheading.

Can impatiens grow in containers?

Yes, if containers are checked often for moisture.

Why are my impatiens leggy?

Low light, crowding, or excess nitrogen can stretch growth.

Are impatiens annual or perennial?

They are tender perennials usually grown as annuals in cold climates.

Ready to plant?

Bring dependable color to bright shade.

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