These estimates for how long Japanese spiraea 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 Japanese spiraea to germinate?
days
Average days
| Min days
| Max days (0)
Days to Transplant How long until I can plant out Japanese spiraea?
+ days
Average days
| Min days
| Max days (0)
Days to Maturity How long until Japanese spiraea is ready for harvest / bloom?
+ 1501 days
Average 1501 days
| Min 1501 days
| Max 1501 days (1)
Total Growing Days How long does it take to grow Japanese spiraea?