Dahlia Cactus – Anja G.J.

Cactus Dahlia | White

Dahlia ‘Anja G.J.’ is a beautiful cactus dahlia, admired for its pure white blooms with long, spiky petals that form a striking starburst shape. Its medium, bushy habit makes it perfect for garden borders, flower beds, and eye-catching cut flower arrangements. The elegant colour and unique form bring a cheerful and refined presence to summer gardens.

Tuber Count: 1
Plant Height: 60–90 cm
Plant Type: Tender perennial
Light Requirement: Full Sun
Blooms: Summer to First Frost
Plant Spacing: 40–50 cm
Plant Staking: Recommended for support due to taller growth

Dahlias are shipped as multiple tubers with a minimum of one eye guaranteed. If you’re not ready to plant upon arrival, store tubers in a cool, dry, dark place until planting time.

Planting Information

Plant dahlias after the last spring frost, once soil temperatures reach 15 °C. Choose a rich, well-drained flower bed or planter. Loosen the soil to a depth of 30 cm and enrich with compost and an all-purpose granular fertiliser. Plant tubers with the eye or sprout facing upwards, positioning the top of the tuber 8 cm below the soil surface. Backfill, firm the soil, and water well to eliminate air pockets. Ensure containers have sufficient drainage.

Tips for Growing Dahlias

• Avoid overwatering newly planted tubers—this can cause rot. Water once at planting, then wait until shoots appear before watering again.

• Water deeply once or twice a week, keeping foliage dry to reduce disease.

• Feed with a water-soluble fertiliser every 3–4 weeks during the growing season.

• Deadhead regularly to encourage continuous flowering.

• Cutting flowers for arrangements promotes bushier growth and more blooms.

• In most regions, tubers can overwinter in the ground. In colder areas, lift and store after the first frost.