We love the selection of bulbs available from A.D.R. The variety is great, the quality is excellent and the price is fair. However, the best part of working with A.D.R is the customer service from Chris, Walter and all of the team. They go out of their way to make sure ours needs are met.

Leah and Mark , Wild Hare Farm

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Dahlia Dinnerplate 'Kelvin Floodlight' (Ships in Spring)

Dahlia

Dahlia 'Kelvin Floodlight' is a classic dinnerplate variety celebrated for its enormous yellow blooms that can reach 10 to 12 inches across. The broad, slightly curved petals form a full, rounded flower are perfect for gardens or floral arrangements. This vigorous grower reaches 36 to 48 inches tall and thrives in full sun with well-drained soil. Blooming from midsummer until frost, it’s hardy in USDA zones 8 to 11; in colder climates, tubers should be lifted and stored over winter. A recipient of the Royal Horticultural Society’s Award of Garden Merit, it’s a time-tested favorite.

Description	Price
10 Retail Packages of 1 Bulb, #1 Size tubers	$34.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SRET8011700 is restocked. Email: Needed By: Qty Requested:
Bulk Box of 25 Bulbs, #1 Size tubers	$54.00
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Growing and Maintenance Tips for Dahlia Dinnerplate 'Kelvin Floodlight' (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.