Dahlia – Dalina® Grande Castillo
Dahlias form tubers and these tubers can be stored for replanting in the spring. To dig and store tubers follow these directions. First, allow frost to kill the top of the plant then cut back the stems and dig the tubers. Wash off any soil and then allow the tubers to dry. Wrap dry tubers in newspapers or pack them in peat moss. Label each tuber or group of tubers so you know what they are come spring. Store tubers in a dark, cool (35 to 45 F) place. Do not allow tubers to freeze. Deadheading will encourage additional blooming.
Great in landscapes and containers.
Maintenance Category Moderate
Water Category Average
Flower Form Container, Cut Flower, Landscape
pH B - pH 5.8 - 6.2
EC (2:1 Extraction Method) 0.8 - 1.2
Fertilization 150 - 200
Light Requirements High
Water Requirements Moderate to Moist
Rooting Out Temperature 65 - 72° Fahrenheit
Growing On Temperature 65 - 72° Fahrenheit
Holding Temperature 50 - 60° Fahrenheit
Planting and Timing Information
Early Spring through Fall Finish. Standard PPP.
Finishing Times [weeks]
4-5" and Quart Pot : 5-6
6" and Gallon Pot : 6-8
7-9" Pot : 8-10
10-12" and Two Gallon Pot : 10-12
Pinching and Growth Regulators
Pinch one week after liner planting. Small pots may not require any pinching. Second pinch recommended for 8" and larger. B-9 will help control growth if needed.
Pest and Disease Management
General pest and disease practices as listed in notes. Watch for thrips, white flies and aphids. Powdery Mildew can be problematic, treat as needed.
A good 4 inch crop can be produced without spaciing. Colors up evenly among all varieties.
Dalina Midi are best in small pot sizes and we recommended 4 to 4.5 inch pots. Dalina Grande will work best in 6 inch or larger pots.
Dahlias are long day plants. Provide long days or night interruption lighting to induce blooming if finishing before the first of April.