How to Grow Impatiens: A Guide for Beautiful Blooms

Impatiens are a favorite among gardeners looking to add color to shady spots in their landscape. These cheerful annuals are known for their non-stop flowering and ability to thrive in low-light conditions, making them a popular choice for garden beds, borders, and containers. In this article, we’ll cover everything you need to know to grow and care for beautiful Impatiens flowers, from planting tips to maintenance, ensuring your garden is filled with lush, colorful blooms throughout the season.

Impatiens Basics

Common Name	Impatiens
Botanical Name	Impatiens spp.
Plant Type	Annual (in most climates), Perennial in frost-free zones
Zones	10-11 (USDA Hardiness Zones)
Height & Spread	6 to 12 inches apart depending on the variety
Growth Time	8 to 10 weeks from seed to bloom
Colors	Pink, red, purple, white, orange, and bicolor varieties
Soil	Moist, well-draining, rich in organic matter; pH 6.0 to 6.5
Spacing	6 to 12 inches apart depending on variety
Fertilizing	Use a balanced fertilizer (10-10-10) every 4 to 6 weeks during the growing season
Watering	Regular watering; keep soil evenly moist but avoid waterlogging
Flowering Season	Spring through fall in cooler zones; year-round in frost-free climates

Growing From Seed Vs Transplanting

Impatiens are typically grown as annuals in most regions. These popular plants complete their life cycle—germination, flowering, and seed production—within a single growing season.

In tropical and frost-free climates (USDA Zones 10-11), Impatiens can be perennials and bloom year-round.

However, in areas that experience frost, they are treated as annuals because they cannot survive cold temperatures.

Further reading: Types of annual flowers explained.

Growing From Seed

Starting impatiens from seed can be a rewarding process. It allows you to choose specific varieties and enjoy the full growth cycle.

Cost-Effective: Seeds are usually cheaper than buying plants.
Variety: More options available in seeds.
Time-Consuming: Requires planting indoors 11 weeks before the last frost, as they take about two to three weeks to germinate.

Transplanting

Transplanting involves moving young plants from pots to the garden. It’s faster and easier than growing from seed.

Convenient: You can buy ready-to-plant seedlings.
Limited Variety: Less choice in plant types.
Immediate Results: Plants are ready to bloom sooner.

Each method has its benefits. Whether choosing seeds for the variety and cost savings, or transplants for convenience and quick results, it’s all about what fits best for your own needs.

How To Plant

Planting impatiens in the right spot with proper timing sets them up for thriving growth. These flowers need specific care during planting to encourage healthy blooms.

Best Locations

Impatiens prefer shaded areas. They do well where they receive filtered light, like under trees or next to taller plants. Too much direct sunlight can scorch the leaves, and too little light can reduce blooming.

Soil quality is crucial. Opt for fertile, well-draining soil to prevent root rot, a common issue if water can’t escape. The soil should be rich in organic matter, so adding compost can be beneficial.

Wind protection can also help. Strong winds might damage these flowers, making a sheltered spot ideal.

Planting Times

Early spring is the perfect time to plant impatiens. This timing lets them establish roots before the hot summer. If starting from seeds indoors, do so 8-10 weeks before the last expected frost.

You can also transplant young plants after the last frost date. Check the local frost calendar to determine the best time. Seeds should ideally be sown when daytime temperatures are consistently above 70°F (21°C).

Planting in cooler weather can stress the plants. Make sure the ground is warm, and nights are no longer chilly.

How To Plant

Prepare the planting area by loosening the soil to about 6-8 inches deep. Remove any debris or weeds.

When planting impatiens from seeds, fill small pots with moistened seed-starter mix. Place seeds about 1/2 inch deep and cover lightly with the mix. Cover the pots with plastic to form a mini greenhouse.

For transplants, dig holes slightly larger than the root ball. Space plants 8-12 inches apart to allow for growth. Gently place the plant in the hole, filling it with soil and pressing firmly around the roots.

Water the impatiens thoroughly after planting. A light watering helps settle the soil. Always water at the base to avoid wetting the leaves, which can cause fungal issues.

Impatiens Care

Taking care of impatiens involves understanding their needs for soil, sunlight, temperature, water, fertilizer, pruning, pest control, and protection during the end of the season and winter months.

Each of these aspects is crucial for keeping your impatiens healthy and vibrant.

Soil

Impatiens thrive in well-draining soil that’s rich in organic matter. A mix of compost and well-rotted manure works best.

The soil should be able to retain moisture but not remain soggy. Before planting, make sure to loosen the soil to improve aeration and root growth.

A slightly acidic to neutral pH level around 6.0 to 7.0 is ideal for these flowers.

Sunlight

Impatiens prefer filtered sunlight or partial shade. They can tolerate some morning sun but should be protected from the intense afternoon sun.

Too much direct sunlight can cause their leaves to scorch. If planting in a garden, try placing them under the canopy of taller plants or trees.

In containers, moving them based on sunlight intensity during the day is a good strategy.

Temperature Tolerances

Impatiens grow best in temperatures between 60°F and 75°F. They are not frost-tolerant and should be planted only after the danger of frost has passed.

During cooler nights, covering them with a light fabric can help keep them warm. If the temperatures dip below 50°F, they may suffer from stunted growth or leaf drop.

Watering

When it comes to watering, impatiens need consistently moist soil. They are not drought-tolerant and may wilt quickly when the soil dries out.

Watering should be done at the base of the plant to keep the foliage dry. In dry periods, they might need daily watering, especially if they’re in containers. Use mulch to help retain moisture in the soil.

Fertilizing

Fertilizing is important to keep impatiens blooming throughout the season. Use a balanced, water-soluble fertilizer every two weeks.

Over-fertilizing can cause excessive leaf growth with fewer flowers, so stick to the recommended amounts.

Slow-release fertilizers can also be used at planting time to provide a steady supply of nutrients.

Pruning

Impatiens do not require heavy pruning, but occasional pinching back can encourage bushier growth and more blooms. Remove any dead or yellowing leaves to keep the plant healthy.

Pruning should be done carefully to avoid damaging the stems or new growth. Regularly check the plants for any signs of disease or pests while you prune.

Pest Control

Impatiens are susceptible to pests such as aphids, spider mites, and whiteflies. Regularly inspecting your plants can help catch infestations early.

If pests are spotted, insecticidal soap or neem oil can be effective treatments. Proper watering and fertilizing can also reduce the likelihood of pest problems.

End Of Season

Remove any spent flowers and leaves to keep the garden tidy as the growing season ends.

Healthy plants can be composted, but if you notice any diseased plants, it’s best to dispose of them to prevent spreading pathogens.

Clean up any remaining debris from the garden beds to prepare for the next planting season.

Overwinter Care

For those in regions with cold winters, overwintering impatiens indoors can be a way to preserve them.

Dig up the plants before the first frost and pot them in well-draining soil. Place them in a bright spot indoors with indirect sunlight. Water sparingly during the winter months to prevent root rot.

This way, you can replant them outdoors when the weather warms up.

Recommended Types

When choosing impatiens flowers for your garden, here are some of our favorite varieties.

1. Busy Lizzie (Impatiens walleriana): These are the most common type. They come in various colors, including red, pink, white, and purple. They prefer shady spots and are easy to maintain.

2. New Guinea Impatiens (Impatiens hawkerii): Known for their large, vibrant blooms, these impatiens can tolerate more sun. They have striking leaves that can be green, bronzed, or variegated.

3. Double Impatiens: These types have blooms that look like tiny roses. They are great for containers and hanging baskets. They usually come in shades of pink, red, and white.

4. SunPatiens: These hybrids are bred to tolerate full sun. They’re hardy and great for areas with lots of light. Their blooms are larger and come in bright colors.

5. Cascade Series: These impatiens, with trailing stems, are ideal for hanging baskets. Their pretty flowers provide a beautiful cascading effect.

6. Fanfare Series: These impatiens have a unique star shape. They’re more compact and very colorful. They thrive in partial shade and make great border plants.

7. Accent Series: A versatile type that’s available in a wide range of colors. These impatiens are known for their uniform growth and abundant flowering.

Propagating

Proper propagation methods for impatiens can make a big difference. For those new to gardening, it’s a simple but rewarding process.

Cuttings:

Choose a stem: Pick a non-flowering stem that has at least two to three sets of leaves.
Make the cut: Cut just below one of those leaf sets, creating a 3-4 inch cutting.
Prepare the cutting: Remove the lower leaves and dip the cut end in rooting hormone.

Planting Seeds:

Start with soil: Use moistened seed-starter mix or potting soil to fill small pots.
Plant the seeds: Place one or two seeds in each pot, about 1/2 inch deep, and cover lightly with soil.
Create a mini-greenhouse: Cover the pots with plastic or glass to maintain moisture.

Dividing Plants:

Prepare the plant: Remove the impatiens from its container.
Separate gently: Tease apart a section from the main plant carefully.
Replant: Place the separated plant into a new pot filled with potting soil and water it well.

Impatiens are quite forgiving and easy to propagate, making them ideal for beginners. Remember to keep the soil moist and provide indirect light to help your new plants thrive.

Best Companion Plants

When considering companion plants for impatiens, picking ones that thrive under similar growing conditions is important. Here are some top choices:

Shade-Loving Companions

Begonias are a fantastic choice. They share the shade preference and provide a variety of colors.

Fuchsias are another good match. Their drooping flowers complement the upright blooms of impatiens.

Elephant Ear plants add bold foliage that can contrast nicely with impatiens’ delicate flowers.

Trailing Beauties

Sweet Potato Vines (Ipomoea batatas) are perfect for hanging baskets. They send out bright leaves that trail down, creating a lovely effect.

Bacopa is another trailing plant that fits well with impatiens. Its small flowers add a touch of whimsy.

Color and Foliage Contrasts

For a bolder look, plant Lobelia alongside impatiens. Its intense blue flowers pop against the soft hues of impatiens.

Wishbone Flower offers similar benefits. Its trumpet-shaped blooms come in shades that complement impatiens’ palette.

Perennial Companions

Ajuga is a perennial with dark foliage that pairs beautifully with the bright impatiens.

Coral Bells can also provide a striking backdrop due to their rich, deep leaves.

Cimicifuga brings in a hint of elegance. Its tall, dark leaves add height and depth to a garden bed.

Tips for Success

Make sure all plants share similar light, water, and soil needs.
Use 2-3 inches of organic mulch to keep the soil moist and prevent weeds.
Consider plants that add different heights and textures for visual interest.

Further reading: The best easy care annuals to grow in your garden.

Garden Design Tips

When designing your garden with impatiens, think about color combinations. These flowers come in shades from white to deep reds. Mixing different colors can create lively and eye-catching displays.

Consider plant height when arranging your garden. Impatiens are typically low-growing, so placing taller plants like ferns behind them can create a layered look. This helps achieve depth and dimension in your garden.

Be mindful of spacing. Crowding can lead to poor airflow and potential diseases. Ideally, space impatiens about 8-12 inches apart. This gives them room to grow and ensures each plant gets enough nutrients.

Using containers is another great design idea. Impatiens do well in pots and hanging baskets. They add a pop of color on patios, balconies, or any small space. Plus, containers make it easy to move plants if needed.

Common Problems And How To Deal With Them

Wilting: Wilting is a sign of moisture stress. Impatiens prefer soil that is consistently moist but not soggy. If the soil dries out too much, the plants will wilt. To avoid this, water regularly and ensure the soil is well-drained.

Heat Stress: Too much heat can also cause impatiens to wilt. If temperatures soar, consider moving them to a shadier spot or providing some midday shade.

Yellow Leaves: Yellowing leaves often indicate too much water or poor drainage. Make sure the soil is moist but not waterlogged. Adjust your watering routine and use well-drained soil.

Leaf and Bud Drop: Impatiens can drop leaves and buds when they are stressed. This can happen due to inconsistent watering or sudden temperature changes. Keep their environment stable and water evenly.

Powdery Mildew: This white, powdery fungus can appear on leaves, especially in humid conditions. To prevent powdery mildew, water at the base of the plant, not from above, and provide good air circulation.

Root Rot: Overwatering can lead to root rot. Signs include yellowing leaves and stunted growth. Ensure the soil is well-draining, and avoid watering too frequently.

Pests: Common pests like aphids, spider mites, and thrips can affect impatiens. Check plants regularly and use insecticidal soap if needed. Removing affected leaves can also help manage pests.

Wrapping Up

Planting and caring for impatiens in your garden can be a really rewarding experience. These flowers brighten any space with minimal fuss. Remember to find a shady spot in your garden. Impatiens thrive out of direct sunlight and love moist soil.

When planting, give them a bit of breathing room (8-12 inches). This spacing helps them grow without fighting for nutrients. When taking cuttings, select a healthy non-flowering stem. Snip below a leaf set for a 3-4 inch cutting.

Happy Gardening!

Andrew Gaumond

Editorial Director | andrew@petalrepublic.com | Full Bio

Andrew is the Editorial Director at Petal Republic. He holds a BSc degree in Plant Sciences and has trained professionally at leading floristry schools in London and Paris. In amongst overseeing a global editorial team, Andrew's a passionate content creator around all things flowers, floral design, gardening, and houseplants.

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