Erysimum ‘Red Jep’

Description

Erysimum ‘Red Jep’ is a striking perennial wallflower loved for its highly scented clusters of deep purple-red flowers that soften in colour as they age. With its tall stems, rich fragrance, and vibrant late-spring display, Erysimum ‘Red Jep’ adds height, drama, and long-lasting colour to borders, gravel gardens, containers, and wildlife-friendly planting schemes.

PLANTING and AFTERCARE GUIDE

Best Planting Time

The best time to plant your Erysimum is in spring when the soil begins to warm, allowing young roots to establish before flowering begins. Alternatively, planting in early autumn is also effective, as it gives your Erysimum time to settle before its next growth phase.

Site Selection

Sunlight: Choose a position in full sun to encourage strong flowering and upright growth. Because Erysimum thrives in bright conditions, selecting a sunny spot enhances its deep colour and sweet scent.

Soil: Provide free-draining soil to prevent waterlogging and promote healthy roots. Incorporating grit or compost improves soil structure and creates ideal growing conditions for Erysimum.

Planting Instructions

1. Prepare the Hole
   First, dig a hole twice the width of the root ball. This gives your Erysimum space to form a sturdy root system.
2. Soil Preparation
   Next, mix in organic matter or coarse grit to improve drainage and aeration.
3. Planting
   Then place the plant so the top of the root ball is level with the surrounding soil. After positioning, gently backfill and firm the soil to secure Erysimum ‘Red Jep’.
4. Watering After Planting
   Finally, water thoroughly to settle the soil. Once established, Erysimum prefers moderate moisture and tolerates short dry spells.

Watering Requirements

Water during extended dry periods, allowing the soil to dry slightly between watering sessions. During winter dormancy, reduce watering significantly to avoid excessive moisture.

Feeding

Apply a balanced fertiliser in early spring to encourage fresh growth and strong flowering. Additionally, a light midsummer feed helps your Erysimum maintain vigour through the season.

Pruning

Deadhead spent blooms regularly to promote continuous flowering and keep the plant tidy. After the flowering period, lightly trim to encourage compact new growth and prevent legginess.

Mulching

In spring, apply a thin layer of mulch to help retain moisture and suppress weeds. However, keep mulch clear of the plant’s crown to avoid excess moisture build-up. A light winter mulch protects the roots while maintaining the free-draining conditions preferred by Erysimum.

Final Tips

Erysimum ‘Red Jep’ is a hardy, low-maintenance perennial that provides months of rich colour, fragrance, and pollinator appeal. With its tall flowering stems, bold purple-red tones, and preference for sunny, free-draining soil, this Erysimum is an excellent choice for gardeners seeking vibrant early-season impact and reliable seasonal performance.

RHS Details

See more Erysimum from Proctors