Impatiens
The quintessential shade annual producing non-stop blooms in bright colors all summer without deadheading.
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Meet Impatiens
The quintessential shade annual producing non-stop blooms in bright colors all summer without deadheading. Impatiens require consistent moisture and will wilt dramatically when dry, though they recover quickly with watering. Avoid planting in areas with downy mildew history and choose resistant New Guinea types for sunnier spots.
When to plant Impatiens
Impatiens seeds are very fine and need light to germinate. Start seeds indoors ten to twelve weeks before the last frost, sowing on the surface of moist seed-starting mix without covering. Keep at 70 to 75 degrees Fahrenheit under fluorescent lights and maintain consistent surface moisture. Germination takes ten to twenty days. Seedlings grow very slowly at first and need patience. Most gardeners find it more convenient to purchase established transplants, as growing impatiens from seed requires considerable time and attention.
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Used once to set your season · never sharedHow to grow Impatiens
Plant impatiens transplants outdoors after all danger of frost has passed and nighttime temperatures remain above 50 degrees Fahrenheit. Choose a location with partial to full shade, as traditional Impatiens walleriana cannot tolerate direct sun for more than a few morning hours. Space plants ten to twelve inches apart in rich, moist, well-drained soil amended with generous amounts of compost.
Impatiens are moisture-loving plants that wilt dramatically when dry but recover quickly after watering. Keep soil consistently moist throughout the growing season, watering whenever the top inch of soil feels dry. Apply a two to three inch layer of mulch to retain moisture and keep roots cool. In containers, check moisture levels daily during hot weather, as impatiens in pots dry out faster than those in the ground.
Feed every two to three weeks with a balanced liquid fertilizer to sustain continuous blooming. Impatiens are self-cleaning and never need deadheading, making them the ultimate low-maintenance shade flower. Pinch young plants once to encourage branching if they arrive from the nursery with a single stem. Watch for downy mildew, a devastating disease that has become widespread in many areas, and consider switching to resistant SunPatiens or New Guinea impatiens if your area is affected.
The bed planner spaces every plant for you
Pick a bed size and PlotMyGarden spaces your Impatiens at 25 cm, counts how many fit, and lays the block out before you buy a single seed.
Impatiens's best neighbours
Impatiens are classic companions for shade gardens alongside hostas, ferns, begonias, and coleus. They provide season-long color beneath trees where few other flowering annuals will thrive. Plant alongside caladiums for a tropical-looking shade display. In containers, combine with trailing ivy, asparagus fern, and creeping Jenny for layered shade combinations. The bright flower colors of impatiens light up dark garden corners and north-facing foundation plantings.
It flags clashes before you plant, not after
Every plant you place is checked against its neighbours in real time. Good matches glow green; conflicts get flagged on the spot — so a season-wrecking mistake never makes it into the ground.
Feed it well
Impatiens thrive in rich, humus-laden, consistently moist soil with a pH of 6.0 to 6.5. Amend planting areas with generous compost to improve moisture retention and soil structure. Apply a balanced slow-release fertilizer at planting time and supplement with liquid fertilizer every two to three weeks during the growing season. In containers, use a moisture-retentive potting mix and feed weekly with diluted liquid fertilizer. Avoid letting soil dry out completely, which stresses plants and reduces flowering.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Starting
Impatiens seeds are extremely small and require light to germinate. Press them gently onto the surface of moist, fine-textured seed-starting mix without covering. Seeds need consistent warmth of 22-25°C and humidity to sprout. Germination is slow and can take 10-21 days.
Seedling Development
Tiny seedlings emerge with small rounded cotyledon leaves. Growth is very slow at first and the seedlings are fragile. After a few weeks the first true leaves appear, which are oval with slightly serrated edges. Seedlings remain compact and low during this phase.
Vegetative Growth
Plants begin to branch and fill out, developing their characteristic succulent stems and glossy dark green foliage. The fleshy stems are semi-translucent and brittle, snapping easily if handled roughly. Leaf production accelerates and plants start to form a mounding shape.
Bud Formation and Early Bloom
Small flower buds appear at the leaf axils and stem tips. The first blooms open within a week of bud appearance. Flowers are flat and open-faced with five petals and a distinctive nectar spur at the back. Plants continue to grow and branch as they flower.
Peak Flowering
Impatiens enter their most prolific blooming period, producing flowers continuously without deadheading. The plants are self-cleaning, meaning spent flowers drop away on their own while new buds keep opening. A single well-grown plant can be covered in dozens of open flowers simultaneously.
Seed Set and Late Season
As temperatures drop in autumn, flowering gradually slows. Some blooms give way to plump green seed pods that swell as seeds develop inside. When fully ripe, the seed capsules explode at the slightest touch, flinging seeds up to a meter away in every direction.
Cover seed trays with clear plastic wrap or a humidity dome to maintain moisture. Provide bright indirect light or fluorescent grow lights for 12-16 hours daily. Mist the surface rather than watering heavily to avoid displacing the tiny seeds.
Caring for Impatiens month by month
What to do each month for your Impatiens
July
You are hereNo specific care tasks for this month.
Harvesting Impatiens
Impatiens are not grown as cut flowers and their succulent stems do not hold up well in arrangements. No deadheading is needed, as spent flowers drop cleanly on their own. Impatiens produce seed pods that snap open explosively when touched, hence the common name touch-me-not. To collect seeds, wrap a nearly ripe pod gently in tissue and squeeze to trigger it. Store the tiny seeds in a paper envelope in a cool, dry place. Impatiens self-sow freely in mild climates.
We count the days and tell you when to pick
Tell us when you planted and PlotMyGarden tracks the 50-day countdown to harvest, then pings you the day your Impatiens is ready.
Storage & Preservation
Impatiens are not suitable for cutting or drying. Their value lies entirely in their live performance as shade-garden and container plants. To preserve favorite varieties over winter, take three to four inch stem cuttings before the first frost. Impatiens root extremely easily in water within seven to ten days. Pot rooted cuttings and grow indoors on a bright windowsill through winter, then move outdoors again after the last spring frost.
What goes wrong — and the fix
Impatiens Downy Mildew
DiseaseLeaves develop a stippled, yellowed appearance, followed by a white fuzzy coating on leaf undersides. Plants defoliate rapidly from the bottom up and may collapse within weeks. This soil-borne disease persists for years.
Spider Mites
PestFine stippling on leaves that gradually turn bronze or gray, with delicate webbing on leaf undersides. Most common during hot, dry weather and on plants under water stress.
Slugs and Snails
PestIrregular holes in leaves and flowers, silvery slime trails on foliage, most active at night and during wet weather. Young transplants are especially vulnerable.
Troubleshooting Common Problems
Impatiens downy mildew has devastated traditional Impatiens walleriana in many areas of the eastern United States and Europe, causing complete defoliation and plant death with no effective treatment. This has led to widespread adoption of resistant alternatives. Other common problems include wilting from inconsistent moisture, legginess in deep shade, and slug damage on young transplants. Impatiens are frost-tender and blacken immediately at the first freeze.
Growing Tips
- Plant impatiens in partial to full shade for the best performance. While they tolerate some morning sun in cooler climates, direct afternoon sunlight causes leaf scorch, wilting, and faded flower colors in most regions.
- Provide consistently moist, well-drained soil rich in organic matter. Amend heavy clay or sandy soils with compost before planting to improve moisture retention and drainage simultaneously.
- Space plants 25-30 cm apart to allow good air circulation, which helps prevent fungal diseases like downy mildew. Avoid overcrowding, even though the gaps between young plants may look sparse at first.
- Water impatiens at the base of the plants rather than overhead to keep foliage dry and reduce the risk of downy mildew and other foliar diseases. Morning watering is preferable to evening watering.
- Feed every two weeks during the growing season with a balanced water-soluble fertilizer diluted to half strength. Over-fertilizing with high-nitrogen formulas produces leggy growth with fewer flowers.
- Pinch back the growing tips of young plants when they have three to four sets of leaves to encourage branching and a denser, more compact habit that fills in more quickly and produces more blooms.
- Mulch around impatiens with 5-7 cm of shredded bark or compost to conserve soil moisture, keep root temperatures cool, and suppress weed competition in the garden bed.
- Monitor closely for signs of downy mildew, which appears as yellowing leaves, white fuzzy growth on leaf undersides, and sudden defoliation. Remove and destroy affected plants immediately to prevent spread.
- Take 8-10 cm stem cuttings in late summer and root them in water or moist perlite to create new plants for overwintering indoors on a bright windowsill. Cuttings root readily within two to three weeks.
- In frost-free regions or when grown indoors as houseplants, impatiens can become leggy over time. Cut plants back by half in late winter to rejuvenate them and promote fresh bushy growth and abundant flowering.
Pick your Impatiens
Super Elfin Series
The industry standard bedding impatiens with compact ten-inch plants in over twenty-five colors, exceptional uniformity for mass plantings.
SunPatiens Series
Downy mildew resistant interspecific hybrids that tolerate full sun, vigorous growers reaching eighteen to thirty-six inches.
Beacon Series
Bred specifically for resistance to impatiens downy mildew while maintaining the classic walleriana habit and shade tolerance.
Imara XDR Series
Extra disease resistant impatiens with strong tolerance to downy mildew on compact, well-branched plants in a wide color range.
New Guinea Impatiens
A separate species with larger flowers, colorful foliage, and tolerance for more sun. Naturally resistant to downy mildew.
A pack of impatiens seeds containing 50-100 seeds costs approximately $3-5, while nursery transplants sell for $3-6 per individual plant or $15-25 per flat of 18-36 plants. Starting from seed saves 70-80% compared to buying transplants, and a single seed packet can fill an entire shade garden bed. Rooting stem cuttings from existing plants in late summer provides free new plants for the following year. Given that professional landscapers charge $4-8 per plant installed, a gardener who grows their own impatiens from seed can save $100-300 or more per season on shade garden color alone.
Quick recipes
Edible Flower Ice Cubes with Impatiens
15 minutes plus freezing timeCreate stunning decorative ice cubes by suspending individual impatiens blooms in water and freezing them. These colorful cubes add a whimsical garden touch to lemonade, sparkling water, or cocktails at summer gatherings. Use only organically grown flowers that have never been treated with pesticides.
4 ingredients
Impatiens Flower Garnish Salad
10 minutesScatter fresh impatiens petals over a simple green salad for a burst of garden color. The flowers have a very mild, slightly sweet flavor that does not overpower the other ingredients. This is a lovely way to use a handful of blooms from your shade garden at a special dinner.
5 ingredients
Candied Impatiens Flowers
30 minutes plus drying overnightPreserve the beauty of impatiens blooms by coating them in egg white and superfine sugar to create delicate candied flowers. These crystallized decorations keep for weeks in an airtight container and make gorgeous toppings for cakes, cupcakes, and dessert plates.
5 ingredientsWhat's inside
Health Benefits
- In East African traditional medicine, the crushed leaves and stems of Impatiens walleriana have been applied as a soothing poultice to relieve skin irritation, minor rashes, and insect stings due to their cooling mucilaginous sap.
- The anti-inflammatory properties of impatiens sap have been used in folk remedies to reduce the itching and discomfort caused by contact with stinging nettles, similar to the related North American species Impatiens capensis (jewelweed).
- Growing impatiens in shaded outdoor spaces can support mental well-being by bringing vibrant color and life to otherwise dark and uninviting areas of the garden, contributing to a more relaxing and uplifting outdoor environment.
- Tending to impatiens and other garden plants provides gentle physical activity and a connection to nature that has been shown in numerous studies to reduce stress, lower cortisol levels, and improve overall mood.
- Impatiens flowers attract beneficial pollinators including butterflies, hawk moths, and certain native bees, supporting local biodiversity and contributing to a healthier garden ecosystem overall.
- The simple act of nurturing plants like impatiens through the growing season offers therapeutic value for practitioners of horticultural therapy, helping to improve focus, patience, and a sense of accomplishment.
Where Impatiens comes from
Impatiens walleriana, commonly known as busy Lizzie, is a tender perennial native to the mountainous tropical forests of eastern Africa, where it grows wild along stream banks and on the damp, shaded forest floor in countries including Tanzania, Mozambique, Kenya, and Malawi. The species was first described scientifically by the British botanist Joseph Dalton Hooker in 1868 and was named in honor of Horace Waller, a British missionary and antislavery activist who collected plant specimens during his years in East Africa. The plant was introduced to European horticulture in the late nineteenth century, initially grown as a greenhouse curiosity and conservatory specimen. Its ability to flower profusely in low light conditions quickly made it popular among Victorian gardeners who struggled to find colorful plants for their shaded parlor gardens and north-facing window boxes. By the early twentieth century, plant breeders in Europe and the United States began developing compact cultivars in a broader range of colors, transforming impatiens from a botanical oddity into a mainstream bedding plant. The mid-twentieth century saw an explosion in impatiens popularity as garden centers and nurseries recognized the enormous demand for shade-tolerant annuals. By the 1980s and 1990s, impatiens had become the best-selling bedding plant in North America, with hundreds of millions of plants sold annually. This dominance was challenged beginning around 2004 when a devastating strain of downy mildew caused by Plasmopara obducens began spreading through impatiens plantings worldwide, wiping out entire landscape installations almost overnight. The crisis spurred intensive breeding efforts that led to the development of resistant species and interspecific hybrids, including the increasingly popular Impatiens hawkeri (New Guinea impatiens) and SunPatiens series. Today impatiens remain a beloved choice for shade gardens, containers, and hanging baskets around the world, valued for their unmatched flower power in low light and their forgiving, easy-care nature.
Impatiens: did you know?
Fascinating facts about Impatiens
The name Impatiens comes from the Latin word for impatient, referring to the way the ripe seed capsules burst open explosively at the slightest touch, catapulting seeds up to a meter away from the parent plant.
Impatiens questions, answered
When should I plant Impatiens?
What are good companion plants for Impatiens?
What hardiness zones can Impatiens grow in?
How much sun does Impatiens need?
How far apart should I space Impatiens?
What pests and diseases affect Impatiens?
How do I store Impatiens after harvest?
What are the best Impatiens varieties to grow?
What soil does Impatiens need?
Why do my impatiens wilt so easily even when the soil seems moist?
What is impatiens downy mildew and how can I prevent it?
Can impatiens grow in full sun or do they strictly need shade?
How do I overwinter impatiens indoors?
Why are my impatiens getting leggy and producing fewer flowers?
Are impatiens toxic to pets or children?
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A plan that knows your weather
Set your location once. Get sow, feed and harvest dates built around your real last-frost date and live forecast — no more guessing from a generic seed packet.
From the “When to plant” sectionDrag-and-drop bed planner
Design beds on a grid. Every plant snaps to its proper spacing, and you can see your whole season laid out before you spend a cent on seed.
From the “Growing guide” sectionCompanion conflicts, caught early
200+ good-and-bad pairings checked live as you plant — so a season-wrecking mistake never makes it into the ground.
From the “Companions” sectionReminders you'll actually act on
“Water the beans.” “Pick today before it turns.” Timely, specific, and tied to the plants you're really growing.
From the “Harvest” sectionSuccession, scheduled
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From the “When to plant” sectionA record that gets smarter
Every harvest you log teaches it your garden. Next year's plan starts from what actually worked in your soil, not a textbook's.
From the “Overview” sectionPlant these alongside Impatiens
More Annuals
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