I am a landscape designer and have been purchasing 1000's of spring flowering bulbs from A.D.R. Bulbs for 100's of clients in the last 20 years. The bulbs have always been of top quality and if there were any problems, they have been quick to rectify. My orders are often complicated with many varieties and different amounts and they have always filled and delivered everything on time with the best customer care and attention to detail. The pictures in their catalog and website are beautiful. I have visited their facility in NY and was impressed with all their handling equipment and organization. I would highly recommend A.D.R. Bulbs to anyone in the wholesale trade who wants to purchase quality bulbs and work with genuinely nice people.

Nancy Greenlee , From The Ground Up

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Dahlia Cactus 'Purple Gem' (Ships in Spring)

Dahlia

Dahlia 'Purple Gem' is a semi-cactus variety known for its deep violet-purple blooms with long, pointed petals that create a dynamic, spiky effect. The flowers, typically around 5 inches in diameter, shimmer in the light, adding a dramatic presence to garden beds and floral arrangements. This dahlia reaches a height of approximately 36 inches with a spread of 18 to 24 inches, forming a bushy, upright habit. Blooming from mid-summer until frost, it thrives in full sun and well-drained soil, making it a reliable choice for borders, containers, and cutting gardens. It attracts pollinators such as bees and butterflies while offering some resistance to deer and rabbits. Hardy in USDA zones 8 to 11.

Description	Price
10 Retail Packages of 1 Bulb, #1 Size tubers	$33.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SRET8011240 is restocked. Email: Needed By: Qty Requested:
Bulk Box of 25 Bulbs, #1 Size tubers	$51.50
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Growing and Maintenance Tips for Dahlia Cactus 'Purple Gem' (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 18 to 24 inches apart to accommodate their vigorous growth and airflow needs.
Location: Full sun (6–8 hours daily) is essential for strong stems and abundant blooms.
Soil: Fertile, well-drained soil with a slightly acidic to neutral pH (6.0–7.0). Enrich with compost before planting.
Watering: Water deeply once or twice a week, keeping soil evenly moist but not soggy. 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: Apply a balanced fertilizer monthly or use a slow-release formula at planting and midsummer. Avoid high-nitrogen feeds.
Pruning: Pinch back when plants reach 12 inches tall to encourage bushier growth. Deadhead regularly to promote continuous bloom.
Pest & Disease: Watch for aphids, spider mites, and fungal issues. Ensure good air circulation and avoid overhead watering.
Propagation: Divide tubers in spring, ensuring each division has at least one viable eye.