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Dahlia Dinnerplate 'Penhill Watermelon' (Ships in Spring)

Dahlia

Dahlia 'Penhill Watermelon' is a dinnerplate variety with enormous 10 to 12 inch blooms in a blend of peach, coral, lavender, and soft yellow. The petals are long, slightly twisted, and ruffled, giving each flower a whimsical, windswept look. This vigorous grower reaches 40 to 50 inches tall and thrives in full sun with well-drained, fertile soil. Blooming from midsummer until frost, it’s ideal for cutting gardens, borders, and large-scale floral displays. Hardy in USDA zones 8 to 11.

Description	Price
10 Retail Packages of 1 Bulb, #1 Size tubers	$38.00
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Bulk Box of 25 Bulbs, #1 Size tubers	$64.50
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Growing and Maintenance Tips for Dahlia Dinnerplate 'Penhill Watermelon' (Ships in Spring)

Planting: In spring, plant tubers 3 to 4 inches deep with the eye facing up, once soil has warmed to at least 60°F. Space 24 to 36 inches apart to accommodate their tall stature and massive blooms.
Location: Full sun (6–8 hours daily) is essential. Choose a sheltered spot to protect from wind, as the large flowers can be top-heavy.
Soil: Rich, loamy, well-drained soil with a slightly acidic to neutral pH (6.0–7.0). Amend with compost or decomposed leaves for aeration and fertility.
Watering: Water deeply 1–2 times per week, increasing during hot, dry spells. Avoid watering until shoots emerge to prevent rot.
Temperature: Hardy in USDA zones 8–10. In colder zones, lift tubers after frost and store in a cool, dry place.
Fertilization: Feed every 2–3 weeks with a balanced or low-nitrogen fertilizer. Overfeeding nitrogen can reduce bloom size.
Pruning: Pinch back when plants reach 12 inches tall to encourage branching. Disbud (remove side buds) to direct energy into fewer, larger blooms. Deadhead regularly to extend flowering.
Staking: Essential. Use tall stakes or cages early to support stems and prevent flopping under the weight of 10–12 inch blooms.
Pest & Disease: Watch for aphids, spider mites, and powdery mildew. Ensure good air circulation and avoid overhead watering.
Propagation: Divide tubers in spring, ensuring each has at least one viable eye.