Water well and fertilize regularly throughout growing season. Deadhead for more flowering.
Plant in a location that enjoys partial sun and remember to water moderately. Blue Mirror is generally regarded as a hardy plant, so this plant will survive close to or on freezing temperatures.By our calculations, you should look at sowing Blue Mirror about 49 days before your last frost date.
When plants are 3 – 4 inches tall, gradually acclimate to outdoor conditions and transplant in a sunny spot with well-drained soil.
Blue Mirror is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.First introduced to England in 1818. It is known in China as “Herb of the Flying Swallow”.