Hemelsleutel

Hylotelephium telephium

Engels: Orpine

perennialCrassulaceae🇳🇱 Inheems

Hemelsleutel (Hylotelephium telephium) is a native to the Netherlands perennial from the Crassulaceae family that grows up to 60cm tall. This plant thrives in full sun to partial shade and requires low maintenance. Blooms in summer and autumn with pink, red flowers and attracts bees and butterflies.

Hoogte

30–60 cm

Breedte

30–50 cm

Zonligging

full sun, partial shade

Waterbehoefte

low water needs

Grondsoort

loam, sandy soil, chalky soil

Onderhoud

low maintenance

Bloeitijd

summer, autumn

Bloemkleuren

pink, red

Ecologische waarde

Trekt bijen aan

🦋 Trekt vlinders aan

Verzorgingskalender

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

Planting

Orpine thrives in full sun or partial shade, making it a versatile choice for borders, gravel gardens, and wildlife-friendly planting schemes. It tolerates a wide range of soil types—loam, sandy soil, and chalky soil—but demands good drainage above all else. Avoid heavy clay or waterlogged ground, as the fleshy roots are prone to rot in wet conditions. Plant orpine in March, April, or May for spring planting, or in September and October for autumn planting. Both windows work well, though autumn planting allows roots to establish before winter. Space plants 35 cm apart to allow for their mature spread of 30–50 cm. If planting in groups, odd numbers (three or five) create a more natural look. Prepare the soil by removing weeds and incorporating coarse grit or horticultural sand if drainage is poor. Dig a hole slightly larger than the root ball, position the plant so the crown sits level with the soil surface, and backfill gently. Firm the soil around the base with your hands to eliminate air pockets. Water lightly after planting to settle the roots, but avoid saturating the soil. Orpine is drought-tolerant once established and resents overwatering. A thin layer of gravel mulch around the base helps suppress weeds and improves drainage, but keep it clear of the crown to prevent rot. Staking is unnecessary; the sturdy stems support themselves even when laden with flowers. In exposed sites, choose a spot with some shelter from strong winds to prevent stems flopping, though this is rarely a problem with healthy, well-drained plants.

Pruning

Orpine requires minimal pruning, but a tidy-up in March keeps plants vigorous and attractive. The main task is cutting back the previous year's dead stems, which you can leave standing over winter if you wish—the dried flowerheads look handsome under frost and provide seed for birds. In March, before new growth emerges, cut all stems down to ground level using secateurs or garden shears. This removes old, brittle growth and makes way for fresh shoots. If you prefer a tidier winter garden, you can cut back in late autumn after flowering finishes, but leaving the stems until spring offers more wildlife value and structural interest. Some gardeners also appreciate the russet tones of the faded foliage in the winter border. Orpine does not need deadheading during the growing season unless you dislike the look of spent blooms. The flowers age gracefully from pink or red to bronze, and many pollinators continue to visit even as petals fade. Removing flowerheads mid-season will not encourage a second flush, so it's largely cosmetic. Every three to four years, consider lifting and dividing congested clumps in March or April. This rejuvenates older plants that have become woody or flower less freely. Dig up the clump, tease or cut it into sections with healthy roots and shoots, discard any dead central portions, and replant divisions 35 cm apart in refreshed soil. Water lightly after replanting. Division is the easiest way to propagate orpine and maintain vigour without any complicated techniques.

Maintenance

Orpine is a low-maintenance perennial well suited to dry, sunny spots. Once established, it has low water needs and tolerates drought well thanks to its succulent leaves, which store moisture. Water sparingly during prolonged dry spells in the first growing season to help roots settle, but after that, rainfall is usually sufficient. Overwatering or poorly drained soil causes root rot, so err on the side of dryness. Feeding is not necessary. Orpine grows naturally on poor, stony ground and too much fertility encourages soft, floppy growth prone to collapsing. If your soil is very impoverished, a light scattering of general-purpose granular fertiliser in early spring is the absolute maximum; in most garden soils, skip feeding altogether. Orpine is hardy to zone 3a and requires no winter protection in temperate Europe. Leave the dead stems standing until March for structure and wildlife interest, or cut them back in late autumn if you prefer. A gravel mulch around the base helps suppress weeds and maintain good drainage year-round, but avoid organic mulches like compost or bark, which retain moisture and can rot the crown. Pests and diseases are rare. Slugs and snails occasionally nibble young shoots in spring; hand-pick or use organic pellets if damage is severe. Vine weevil larvae can attack the roots in container-grown plants, causing sudden wilting; check pots in autumn and treat with biological controls if needed. Aphids sometimes cluster on flower buds in summer but seldom cause lasting harm. Overall, orpine is a robust, trouble-free plant that rewards neglect better than fussing.