I have worked with A.D.R. Bulbs for almost 5 years now, and my company has sourced bulbs with them for longer than that. Communication is great - from ordering, to deliveries, to follow-ups on final product. I love the quality of the product as well as the service. We plant nearly 100,000 bulbs and A.D.R. keeps the whole process easy for us!

Louise Licata , Bland Landscaping Co.

« Previous Plant | Next Plant »

Dahlia Ball 'Isabel' (Ships in Spring)

Dahlia

Dahlia 'Isabel' is a ball-type dahlia featuring bright lavender flowers with coral accents toward the center. The blooms, about 3 inches wide, create a charming display, especially when paired with late-season asters and tall grasses. This variety grows up to 44 inches tall and thrives in full sun with consistent moisture and well-drained soil. Blooming from midsummer until frost, 'Isabel' is an excellent choice for garden borders, floral arrangements, and pollinator-friendly plantings. Hardy in zones 3-7, it requires lifting and storing in colder climates before winter.

Dahlia Calculator

Fill out the dimensions below to determine how much product is required for planting.

Growing and Maintenance Tips for Dahlia Ball 'Isabel' (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 allow for airflow and mature spread.
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.