Geranium pratense ‘Storm Cloud’

Description

Geranium pratense ‘Storm Cloud’ is a striking hardy perennial known for its vibrant blue-purple flowers set beautifully against deep, dark foliage. Because it flowers from June to October, Geranium pratense ‘Storm Cloud’ provides long-lasting colour and dramatic contrast in borders, cottage gardens and mixed perennial schemes. Follow this detailed guide to help Geranium pratense ‘Storm Cloud’ thrive throughout the growing season.

PLANTING and AFTERCARE GUIDE

Best Planting Time

Plant Geranium pratense ‘Storm Cloud’ when the soil naturally begins to warm or still holds gentle residual warmth, as this supports strong early root establishment and encourages healthy growth ahead of flowering.

Site Selection

• Sunlight: Choose a position with full sun or partial shade, as this promotes strong, upright stems and enhances the vibrancy of the flowers. Additionally, adequate light helps maintain the rich tones of its dramatic foliage.
• Soil: Geranium thrives in moist, well-drained soil. Improving heavy ground with compost or grit boosts drainage and structure, which consequently supports root health and encourages abundant flowering.

Planting Instructions

1. Prepare the Hole: Dig a hole twice the width of the root ball and equal in depth, allowing plenty of room to establish a healthy root system.
2. Soil Preparation: Mix organic matter such as compost into the soil to improve fertility and texture, resulting in better establishment and vigorous growth.
3. Planting: Set Geranium pratense ‘Storm Cloud’ so the top of the root ball is level with the surrounding soil, then gently backfill and firm to remove air pockets.
4. Watering After Planting: Water thoroughly to settle the soil and ensure moisture reaches the roots without causing waterlogging.

Watering Requirements

• Growing Season: Water moderately, allowing the soil surface to dry slightly between waterings. Since Geranium appreciates moisture yet dislikes saturation, this balanced approach helps maintain continuous flowering.
• Dormant Period: Water sparingly and only when the soil is notably dry, allowing the plant to follow its natural resting cycle while avoiding excess moisture around the roots.

Feeding

• Spring: Apply a balanced fertiliser to encourage strong foliage development and early flower formation, giving Geranium pratense ‘Storm Cloud’ an excellent start to the season.
• Mid-Summer: A light supplementary feed helps maintain vigour and supports flower production throughout the extended bloom period.

Pruning

• Deadheading: Remove faded blooms regularly to encourage ongoing flowering and keep the plant looking tidy. This also redirects energy into new flower production.
• Seasonal Cutting Back: After flowering peaks, trim back stems lightly to refresh the plant and promote compact regrowth.

Mulching

• Spring Mulch: Apply a thin layer of organic mulch to maintain soil moisture, suppress weeds and improve soil quality around Geranium pratense ‘Storm Cloud’.
• Winter Mulch: A light protective mulch helps stabilise soil conditions and supports root health for the following season.

Supporting the Plant

Reaching around 50 cm tall, this Geranium may need light support in more exposed areas, although in sheltered positions it typically remains upright without staking.

Final Tips

Geranium pratense ‘Storm Cloud’ is a hardy, low-maintenance perennial that brings dramatic colour and bold foliage to any garden. By planting it in a moist, well-drained, brightly lit site, watering moderately and feeding occasionally, you will enjoy months of rich flowering and eye-catching foliage. With minimal care, it can become a standout feature in any planting scheme year after year.