Cool-season (Groups 1–2) snapdragons are bred for optimal performance under short days, low light, and low temperatures. Best suited to fall, winter, or early spring production, they can be grown indoors or outdoors in mild climates. These varieties are often referred to as “energy-efficient varieties” because they grow and bloom more quickly than higher numbered groups. Varieties classified as Group 1 should only be used during the coolest periods. Varieties classified as Groups 1–2 and varieties classified as Group 2 can tolerate a bit more heat and light and are therefore more adaptable; they work well in fall and spring, as well as in winter production.
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5 Cool Flowers to Plant Now | Lisa Mason Ziegler's Secrets for Growing Hardy, Cool-Season Annuals
Here are Lisa Ziegler's 5 recommended "Cool Flowers" — cold-tolerant hardy annuals for overwintering and shoulder-season growing for the earliest possible blooms in spring.
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