Purperklokje

Heuchera micrantha

Engels: Coral bells

perennialSaxifragaceaeWintergroen

Purperklokje (Heuchera micrantha) is a evergreen perennial from the Saxifragaceae family that grows up to 50cm tall. This plant thrives in partial shade to shade and requires low maintenance. Blooms in late spring and early summer with white flowers and attracts bees.

Hoogte

30–50 cm

Breedte

30–40 cm

Zonligging

partial shade, full shade

Waterbehoefte

moderate

Grondsoort

loam, sandy soil

Onderhoud

low maintenance

Bloeitijd

late spring, early summer

Bloemkleuren

white

Ecologische waarde

Trekt bijen aan

Verzorgingskalender

Taak	Jan	Feb	Mrt	Apr	Mei	Jun	Jul	Aug	Sep	Okt	Nov	Dec
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Care tips

Planting

Heuchera micrantha thrives in partial shade or full shade, making it ideal for woodland gardens, shaded borders, or north-facing beds where many other perennials struggle. It tolerates a range of soil types but performs best in well-drained loam or sandy soil that doesn't become waterlogged in winter. Before planting, dig over the soil to a spade's depth and incorporate a generous amount of organic matter such as garden compost or well-rotted manure to improve both drainage and fertility. Plant in March, April or May for spring planting, or in September and October for autumn establishment. Space plants 35 cm apart to allow for their mature spread of 30–40 cm. Dig a hole slightly larger than the root ball and position the crown at soil level—planting too deeply can lead to rot, while planting too high exposes the roots. Firm the soil gently around the roots to eliminate air pockets. Water thoroughly immediately after planting to settle the soil and help roots establish. Apply a 5 cm layer of mulch around the base, keeping it clear of the crown itself, to retain moisture and suppress weeds. In exposed sites, the evergreen foliage can suffer wind scorch, so choose a sheltered spot if possible. Heuchera micrantha is fully hardy to zone 4, so winter cold is rarely an issue in temperate Europe. New plants establish more reliably in spring when soil temperatures are rising, but autumn planting works well if the ground isn't too wet or heavy.

Pruning

Heuchera micrantha is evergreen and doesn't require traditional pruning, but it does benefit from a tidy-up in early spring to keep it looking its best. In March or April, before new growth begins in earnest, remove any tatty, damaged, or winter-scorched leaves by cutting them off at the base with secateurs or simply pulling them away if they come free easily. This refreshes the plant and allows light and air to reach the crown, encouraging vigorous new foliage. The delicate white flower spikes appear in late spring and early summer on slender stems that rise well above the foliage mound. Deadhead spent flower stems by cutting them back to the base once flowering finishes; this keeps the plant tidy and prevents energy being wasted on seed production, though it won't trigger a second flush of flowers. Use clean, sharp secateurs to avoid bruising the stems. Over time—typically after three to five years—heuchera crowns can become woody and start to lift out of the soil, with the older central portion dying back. When you notice this happening during your spring tidy, lift the entire clump, divide it into healthy sections with roots attached, discard the woody centre, and replant the vigorous outer portions at the correct depth. This rejuvenates the plant and is best done in March or April. No other pruning is necessary, making this an exceptionally low-maintenance perennial for shaded spots.

Maintenance

Heuchera micrantha has moderate water needs and prefers consistent moisture without waterlogging. Water regularly during the first growing season to help roots establish, particularly in dry spells. Once established, it tolerates short dry periods but performs best when the soil doesn't dry out completely in summer. In shaded positions, natural rainfall is often sufficient except during prolonged drought. Reduce watering in autumn and winter when growth slows, and avoid overhead watering which can mark the evergreen foliage. Feed in March or April as new growth emerges, using a balanced general-purpose fertiliser such as blood, fish and bone or a slow-release granular feed scattered around the base at the manufacturer's recommended rate. A second, lighter feed in April can boost foliage quality, but avoid overfeeding—too much nitrogen produces lush leaves prone to disease and reduces the intensity of any purple or bronze tones in the foliage. Top up mulch annually in spring to suppress weeds and retain moisture. Heuchera micrantha is evergreen and fully hardy, requiring no special winter protection in temperate Europe. The foliage may look tired by late winter, but the plant will refresh itself in spring. Vine weevil is the most common pest; adult beetles notch leaf edges while the larvae feed on roots and can kill plants. Check for signs in late summer and consider using biological controls (nematodes) if you spot damage. Powdery mildew can occasionally affect foliage in dry conditions with poor air circulation—remove affected leaves and improve spacing. Rust and leaf spot are rare but more likely in overcrowded or poorly drained sites.