Just outside one Carson's greenhouse we found these beautiful 'Camelot' Foxgloves (Digitalis purpurea hybrids). The series includes 'Camelot Rose' and 'Camelot Lavender'. This hardy perennial is the first F1 hybrid foxglove ever. What's an "F1 hybrid"? We had to look it up and learned that an F1 hybrid plant is the "first generation offspring of two plants of closely related species or strains." (The "F" stands for"filial," which means "brotherly.") What's good about F1 hybrids? They're generally more vigorous than other hybrids. Now, all that said, 'Camelot' Foxgloves have spectacular flushes of bloom, grow to 4 feet tall, and do best in well-drained soil in shady beds and borders.