By our calculations*, you should look at sowing Penstemon Rocky Mountain Blue about 63 days before your last frost date .
How long does Penstemon Rocky Mountain Blue take to grow?
These estimates for how long Penstemon Rocky Mountain Blue takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Days to Germination How long does it take Penstemon Rocky Mountain Blue to germinate?
35 days
Average 35 days
| Min 24 days
| Max 70 days (2)
Days to Transplant How long until I can plant out Penstemon Rocky Mountain Blue?
+ 58 days
Average 58 days
| Min 58 days
| Max 58 days (1)
Days to Maturity How long until Penstemon Rocky Mountain Blue is ready for harvest / bloom?
+ days
Average days
| Min days
| Max days (0)
Total Growing Days How long does it take to grow Penstemon Rocky Mountain Blue?