Euphorbia characias ‘Silver Swan’

Description

Euphorbia characias ‘Silver Swan’ is a compact evergreen perennial prized for its glaucous green foliage edged with vivid silver and its striking cream-margined flowers in spring. Its architectural form, year-round colour, and low-maintenance nature makes Euphorbia ideal for borders, gravel gardens, and containers.

PLANTING & AFTERCARE GUIDE

Best Planting Time

The ideal time to plant Euphorbia characias ‘Silver Swan’ is in spring when the soil begins to warm, supporting strong root establishment. Euphorbia characias ‘Silver Swan’ can also be planted in early autumn to allow the plant to settle before the next growing season.

Site Selection

Sunlight: Euphorbia grows best in full sun to partial shade. Good light enhances its silver-edged foliage and refined spring flowers.

Soil: Plant in fertile, free-draining soil. Avoid waterlogged ground, and improve the soil with compost or organic matter if necessary.

Planting Instructions

1. Prepare the Hole:
   Dig a hole twice as wide as the plant’s root ball and the same depth. This allows Euphorbia characias ‘Silver Swan’ roots to spread efficiently.
2. Soil Preparation:
   Enrich the soil with compost to boost drainage and fertility before setting your Euphorbia in place.
3. Planting:
   Position the plant so the top of the root ball is level with the surrounding soil. Backfill and firm gently to remove air pockets.
4. Watering After Planting:
   Water well to help Euphorbia characias ‘Silver Swan’ settle and begin establishing strong new roots.

Watering Requirements

During the active growing season, water during extended dry spells, allowing the soil to dry slightly between waterings. Avoid overwatering.
In the dormant season, water only if the soil becomes very dry.

Feeding

Apply a balanced fertiliser in early spring to support vigorous new growth. A light midsummer feed helps maintain strong foliage colour and overall plant health.

Pruning

• Remove spent flower stems after blooming to keep your Euphorbia neat and encourage fresh growth.
• Trim older stems as needed to help the plant maintain a compact, attractive shape.

Mulching

Mulch around Euphorbia characias ‘Silver Swan’ in spring to conserve soil moisture, suppress weeds, and stabilise soil temperature.
A winter mulch helps protect the roots and promotes continued plant vitality.

Supporting the Plant

This variety typically needs no support due to its sturdy structure. In exposed areas, light staking may help prevent wind damage to Euphorbia characias ‘Silver Swan’.

Final Tips

Euphorbia offers reliable, year-round interest with minimal maintenance. By planting it in well-drained soil, providing good sunlight, and following these care steps, you’ll enjoy its distinctive foliage and elegant spring flowers season after season.

RHS Details

See more Euphorbia from Proctors