Heuchera: coloured leaves for partial shade, containers and how to rejuvenate an old clump

A low perennial with leaves from lime to black. How to choose a spot by leaf colour, plant heuchera in a container, rejuvenate an old clump and recognise vine weevil.

In brief: Heuchera (coral bells) is a low evergreen perennial grown for its coloured leaves from lime to almost black. It does well in partial shade in free-draining soil, in containers and in a bed. It does not tolerate wet. After 3–4 years the clump rises above the ground and has to be replanted deeper or divided. The main pest is vine weevil.

Height	leaves 20–40 cm, flower stems 40–60 cm
Flowering	May – July, tiny bells
Position	partial shade; dark varieties tolerate more sun, light ones less
Soil	free-draining, never permanently wet
Rejuvenation	every 3–4 years, best at the end of spring
Toxicity	non-toxic to dogs, cats and horses (ASPCA)

Heuchera is a perennial you buy for the colour of its leaves, and that lasts from spring to winter, and in many varieties right through winter. There are hundreds of hybrids on the market with burgundy, caramel, apricot, silvery or yellow-green leaves. They suit borders, shady beds and containers, where they last all year.

Growing it is easy if you know two peculiarities: heuchera rots in wet, and its clump after some years "pushes out" of the ground. In this article you will find how to choose a spot by leaf colour, how to plant it in a container and what to do with an old clump.

Heuchera and its relatives

Heuchera is the genus Heuchera in the saxifrage family and comes from North America. In English it is called coral bells, after the original species, the red-flowered Heuchera sanguinea. Today's garden varieties arose by crossing several species. In garden centres you will also find:

Heucherella – a cross between heuchera and foamflower, the leaves are often lobed with dark markings along the veins, and it tolerates more shade.
Tiarella (foamflower) – a relative that spreads by runners, a good ground-cover plant for shade.

Online, heuchera is sometimes confused with astilbe (Astilbe). Both belong to the same family and grow in partial shade, but astilbe needs moisture, whereas heuchera needs free-draining soil.

Leaf colour and how much sun it tolerates

Leaf colour	Position	What to watch out for
dark purple to black	partial shade, tolerates even sun with enough water	turns green in deep shade
burgundy, red, bronze	partial shade, morning sun	may fade in midday sun
caramel, orange, apricot	partial shade without midday sun	scorches in sun
lime, yellow-green	light shade	scorches most easily, loses brightness in dark shade
silvery, patterned	partial shade	margins turn brown in sun

Heuchera also tolerates dry shade, where astilbe or hosta would suffer, provided you water it regularly in the first year. You can find other plants for shade in the article which plants suit the shade, and an overview of perennials by position in the article ornamental perennials.

Free-draining soil and the crown above ground

Heuchera most often dies not of frost but of wet. In heavy clay soil, where water stands in winter, the crown rots, that is the place from which the leaves grow. Before planting in heavy soil work in compost and coarse sand or fine gravel, or plant it on a raised spot, in a rock garden or in a container.

Plant it at the same level at which it grew in the container, or a touch higher. The crown must not be covered with soil or mulch. Mulch around the plant, not over it.

Heuchera in a container step by step

Choose a container with drainage holes; for one plant a diameter of 20–25 cm is enough, and in a large bowl put 3–5 plants at spacings of around 25 cm.
Put a drainage layer at the bottom. Why it matters is explained in the article drainage in a flower pot.
Mix perennial or balcony plant substrate with perlite, about one part perlite to four parts substrate.
Plant so that the crown is level with the surface of the substrate, press down and water.
In summer water regularly, in heat even daily, but never leave water standing in the saucer. From spring to the end of summer add a liquid fertiliser once every two weeks.
For winter move the container against the wall of the house; roots in a pot freeze through more than in the ground. Water only on frost-free days when the substrate is dry.

Dark heucheras make beautiful combinations with white cyclamen, heathers or grasses in autumn bowls. Container types are compared in the article what to grow in.

When the clump rises: rejuvenation and division

After three to four years you notice that the centre of the clump lifts above the ground, the bottom of the "stem" is bare and leaves grow only at the end. In winter frost also heaves the plant out of the ground. Such a clump loses strength and easily dies in drought or frost.

A simple solution: in spring lift the plant and replant it deeper, so that the bare part is below ground and the leaves are just above the surface. New roots grow from the bare part.
Division: at the end of spring lift the clump and divide it with a knife into pieces, each with a leaf rosette and roots. Plant them in enriched soil and water.

You can also get young plants from cuttings: snap off a tip with a piece of the bare part and push it into moist substrate with perlite in the shade.

Vine weevil and other troubles

Vine weevil is the most common reason why a heuchera suddenly wilts and can be pulled easily out of the ground. Adult beetles chew leaf margins at night into semicircular notches. Much more harmful are their white larvae with a brown head, which eat the roots in the soil and in the substrate of containers. Plants in pots are most at risk.

In spring and summer check the leaves after dark with a torch and collect the beetles.
When repotting, inspect the root ball and remove the larvae.
Biological control is possible with parasitic nematodes, which are applied by watering when the soil is warm.

How to recognise vine weevil and other pests is shown in the visual guide to plant diseases and pests. Slugs, on the other hand, according to the RHS mostly leave heuchera alone, which makes it a good substitute for hosta in places with many slugs.

Other problems are rust (orange-brown pustules on the undersides of leaves; remove affected leaves) and scorched leaves in the sun. In spring trim off old damaged leaves, and after flowering remove the spent flower stems. In cold locations leave the old leaves on the plant over winter; they protect the crown.

A safe plant for a family garden

According to the ASPCA heuchera is non-toxic to dogs, cats and horses. It therefore suits containers on a terrace and a garden where children and animals move about. Caution belongs rather with plant protection products and fertilisers, which should be stored out of their reach.

Frequently asked questions

Is heuchera evergreen?

Most varieties keep their leaves over winter, though in hard frosts they may turn brown. In spring trim the damaged leaves and the plant quickly forms new ones.

Does heuchera tolerate sun?

Dark-leaved varieties also tolerate sun, provided they have enough water. Light, lime and caramel varieties scorch in midday sun and belong in partial shade.

Why did my heuchera suddenly wilt and can be pulled out?

Most often the roots were eaten by vine weevil larvae, mainly in containers. The second cause is crown rot in wet soil.

When should heuchera be divided?

Every three to four years, best at the end of spring. When the clump rises above the ground, you can simply replant it deeper instead of dividing it.

Is heuchera poisonous to cats and dogs?

No. The ASPCA lists it as non-toxic to dogs, cats and horses.

How do I overwinter heuchera in a pot?

Leave the container outdoors against the wall of the house, or wrap it so that the roots do not freeze. Water only on frost-free days when the substrate is dry, and make sure that water does not stand in the container.

Sources

Updated: 27 September 2026

Author: Jana Vránová, the editorial name of the Pěstík.cz team. She writes about the garden, herbs and essential oils. We take safety and dosage information from specialist literature and official sources, which we cite in every article.