Dahlia – Alstergruß

A romantic, richly coloured dahlia variety with dark pink to raspberry-red blooms and a softly rounded form. ‘Alstergruß’ is a semi-cactus dahlia with lightly twisted petals that create a dynamic yet elegant texture in borders, beds, or bouquets. A beautiful mid-height bloomer that adds a warm, nostalgic flair to the garden.

Tuber Count: 2
Plant Height: ±100 cm
Bloom Size: ±10–12 cm
Flower Type: Semi-cactus
Growth Habit: Upright and moderately bushy
Light Requirement: Full sun
Blooming Season: Mid to late summer into early autumn
Spacing: 40–50 cm
Staking: Recommended for optimal support

Growing Info

🕰️ Planting Time:
Spring to early summer (September–November), once frost risk has passed and soil temperatures warm up.

📍 Position:
Full sun position with good airflow and morning light for best flowering performance.

🌱 Soil:
Light, nutrient-rich, and well-draining soil. Mix in compost or aged manure before planting.

💧 Watering:
Water regularly and deeply once growth begins. Allow top layer to dry slightly between watering. Avoid overhead irrigation.

🍽️ Feeding:
Start with balanced fertiliser when sprouting. Switch to high-potassium feed (e.g., 3:1:5 or 5:10:10) during flowering period.

✂️ Maintenance:
Deadhead faded flowers regularly to promote more blooms. Prune lower leaves for airflow.

🛏️ Overwintering:
In colder zones, lift tubers after first frost and store in a dry, cool area. In frost-free regions, they can remain in-ground with mulch.

Why You’ll Love It:

✔️ Eye-catching raspberry-pink flowers with unique petal texture
✔️ Semi-cactus form = sculptural appeal in beds and bouquets
✔️ Mid-height makes it versatile in garden layers
✔️ Loved by pollinators and ideal for cut flower growers
✔️ Long blooming season with repeat flowers into autumn