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Learn about Heuchera

Heuchera: Potted Plant Perennial

How Plant

Planting Potted Plants:

  • Select a location with well-drained, rich, moist soil in partial shade or full sun. Morning sun and afternoon shade is preferred.  
  • Prepare the bed by turning the soil under to a depth of 6-12 inches removing any debris, and lightly raking as level as possible.
  • The addition of organic matter (leaf mold, compost, well-rotted manure) benefits all gardens and is essential in recently constructed neighborhoods.
  • Plant on a cloudy day or in late afternoon to reduce transplant shock.
  • Dig a hole for each plant large enough to amply accommodate the root ball.  
  • Unpot the plant and gently loosen the root ball with your hands to encourage good root growth.  
  • Place the top of the root ball even with the level of the surrounding soil. Fill with soil to the top of the root ball. Press soil down firmly with your hand.  
  • Use the plant tag as a location marker.  
  • Thoroughly water and apply a light mulch layer on top of the soil (1-2 inches) to conserve water and reduce weeds.

How to Grow

  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their germination.  
  • Mulches also help retain soil moisture and maintain even soil temperatures. For perennials, an organic mulch of aged bark or shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time.  Always keep mulches off a plant’s stems to prevent possible rot.
  • Careful watering is essential in getting perennials off to a good start. Water thoroughly at least once a week to help new roots grow down deeply. Soil should be damp at about 1 inch below the soil surface. You can check this by sticking your finger in the soil. Water early in the morning to give all leaves enough time to dry.  One inch of rain or watering per week is recommended for most perennial plants. You can check to see if you need to add water by using a rain gauge.
  • Until plants become established, some protection from extreme winds and direct, hot sunlight may be necessary.  Good air movement is also important.
  • After new growth appears, a light fertilizer may be applied. Keep granular fertilizers away from the plant crown and foliage to avoid burn injury. Use low rates of a slow release fertilizer such as Garden-tone, as higher rates may encourage root rots.
  • Feed heucheras in spring with a top dressing of compost, and renew the mulch around the plants as needed.
  • Deadhead for more continuous blooming if you are growing for the flowers.
  • Divide plants in the spring or fall when the centers of the crowns become woody. Discard the woody part and replant the side shoots. Plants often self-sow when they are happy.

Growing Tips

  • Heucheras make a great woodland groundcover or a specimen plant. They are attractive in the front of the border or as an edging.
  • Grown mostly for their show foliage, which brightens shady areas, many varieties have attractive flowers as well that are good for cutting.

Common Disease Problems

Botrytis: This fungus causes a grey mold on flowers, leaves, stems and buds. It thrives in cool wet weather conditions. Burpee Recommends: Remove affected plant parts, avoid watering at night and getting water on the plant when watering. Make sure plants have good air circulation. Contact your Cooperative Extension Service for fungicide recommendations. 

Cercospora Leaf Blight: Small flecks which develop a yellowish halo appear on the leaves and turn brown and coalesce. They cause the leaves to wither and die. Burpee Recommends: Remove infected plants and destroy all plant debris. 

Downy Mildew: This fungus causes whitish gray patches on the undersides and eventually both sides of the leaves. Burpee Recommends: Avoid overhead watering. Provide adequate air circulation, do not overcrowd plants. Do not work around plants when they are wet. 

Heuchera Rust: This fungus first appears on older leaves and may be mistaken for naturally dying leaves. It forms the characteristic rust colored pustules on the undersides of the leaves. The spores form within the leaf and cannot be wiped off. The upper leaf surface has pock mocking. This rust is host specific and should not spread to other types of plants. Burpee Recommends: Remove affected plant parts as soon as possible and destroy them. Be careful not to remove the growing points. 

Powdery Mildew: This fungus disease occurs on the top of the leaves in humid weather conditions. The leaves appear to have a whitish or greyish surface and may curl. Burpee Recommends: Avoid powdery mildew by providing good air circulation for the plants by good spacing and pruning. Contact your Cooperative Extension Service for fungicide recommendations. 

Common Pest and Cultural Problems

Aphids: Greenish, red, black or peach colored sucking insects can spread disease as they feed on the undersides of leaves. They leave a sticky residue on foliage that attracts ants. Burpee Recommends: Introduce or attract natural predators into your garden such as lady beetles and wasps which feed on aphids. You can also wash them off with a strong spray, or use an insecticidal soap. 

Rabbits: Rabbits may eat mostly the flowers of heuchera. Burpee Recommends: Use a hot pepper wax spray or rabbit repellent. 

Slugs: These pests leave large holes in the foliage or eat leaves entirely. They leave a slime trail, feed at night and are mostly a problem in damp weather. Burpee Recommends: Hand pick, at night if possible. You can try attracting the slugs to traps either using cornmeal or beer. For a beer trap, dig a hole in the ground and place a large cup or bowl into the hole; use something that has steep sides so that the slugs can’t crawl back out when they’re finished. Fill the bowl about ¾ of the way full with beer, and let it sit overnight. In the morning, the bowl should be full of drowned slugs that can be dumped out for the birds to eat. For a cornmeal trap, put a tablespoon or two of cornmeal in a jar and put it on its side near the plants. Slugs are attracted to the scent but they cannot digest it and it will kill them. You can also try placing a barrier around your plants of diatomaceous earth or even coffee grounds. They cannot crawl over these.

Sunburn: Heuchera may become sunburnt if exposed to direct sunlight during the heat of the day. Burpee Recommends: Be sure to site your plants so that they are protected from afternoon sun.

Vine Weevil: This insect cuts irregular notches in leaf margins and grubs feed on plant roots, sometimes causing the death of the plant. Adults are approximately 5/16 inch long, dull black with dirty yellow marking on the wing cases. The grubs are c-shaped, 3/8 inches long, with light brown heads. Burpee Recommends: Handpick adults at night, shake the plants over newspaper to dislodge them. Check under pots where they hide during the day. Check with your Cooperative Extension Service for pesticide recommendations. 

Heuchera FAQs

Can I grow heuchera in a container? Yes, heuchera is fine for containers.

Are heucheras deer resistant? Yes, heucheras do tend to be deer resistant.

Does heuchera attract pollinators? Yes, the flowers attract butterflies and hummingbirds.

Why is my heuchera wilting? It is in good soil and is watered regularly. It sounds like your plant may have been attacked by vine weevils feeding on the roots. You will want to handpick the larvae which feed on the roots at night. You can also contact your Cooperative Extension Service for possible pesticides.

Why did my newly planted heuchera die? Check to see if you may have covered the crown when you planted it. The crown of heuchera cannot be buried or the crown will rot.

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