Dahlia Cactus – Good Earth

Cactus Dahlia | Vibrant Pink

Dahlia ‘Good Earth’ is a stunning cactus variety cherished for its spiky vibrant pink blooms, where petals radiate from a deeper pink at the center to softer pink tips. Its energetic color and dramatic starburst form create impactful displays in summer borders and bring lively elegance to cut flower arrangements.

Tuber Count: 1
Plant Height: 90–120 cm
Plant Type: Tender perennial
Light Requirement: Full Sun
Blooms: Summer to First Frost
Plant Spacing: 45–60 cm
Plant Staking: Yes, due to tall stems and substantial blooms

Dahlias are shipped as single 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 around 15 °C. Choose a rich, well-drained flower bed or large planter. Loosen soil to a depth of 30 cm and enrich with compost and all-purpose granular fertiliser. Place the tuber, eye or sprout facing upwards, about 8 cm below the surface. Backfill, press down firmly to eliminate air pockets, then water well. Ensure containers have good drainage.

Tips for Growing Dahlias

• Avoid overwatering newly planted tubers—only water once at planting, then again when shoots emerge.

• Water at the base and keep foliage dry to reduce disease risk. Deep water once or twice weekly, letting the top 2.5 cm of soil dry between waterings.

• Feed with organic, water-soluble fertiliser every 3–4 weeks until March, then stop to better preserve tubers over winter.

• Deadhead regularly just above a leaf node to prolong flowering.

• Cutting long stems encourages bushier growth and more blooms.

• Dahlias don’t reliably grow from seed—preserve and propagate your favourites via tubers.

• In most parts of South Africa, tubers may stay in the ground over winter and resprout—lift and store only in colder areas or after frost.