When To Plant Summer Bulbs. These dates will in part dictate when the best time to plant is. Best summer flowering bulbs.
Summer bulbs need warm weather and warm soil. In warmer climates spring-flowering bulbs will need to be chilled in the refrigerator for 6 to 10 weeks depending on the bulb until the ground cools enough for planting. When to Plant Summer Bulbs.
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See Helpful Hints below for more information on storing bulbs in the refrigerator. Choose from a vast array of vivid colours and types including pompon windmill single flowered cactus flowered and so many more. When to Plant Summer Bulbs. Warm climate gardeners planting in late spring when the temperatures are on the rise will need to be more aware of keeping the bulbs watered once they see sprouts.