Echium is biennial and it will die after flowering
Use gritty compost, to keep the seeds well drained
Soil temperature should be kept higher than 20°C / 68°F to ensure good germination.Pot the seedling on during its first summer and protect under glass for the first winter. It requires adequate water in its growing period but a dry atmosphere to prevent rot.
When danger of frost has passed plant out into its final flowering position, choosing a well drained, sheltered and sunny spot.
These estimates for how long Tower of Jewels takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 16 days | Min days | Max days (0)
Average days | Min days | Max days (0)
Average days | Min days | Max days (0)
Grows naturally in Tenerife and La Palma