I have been promising to write down this weblog put up for nearly a 12 months and I lastly sat down on the pc to put up it (which isn’t straightforward within the fall!). I need to begin with a disclaimer that it’s not potential to overwinter dahlias in all climates. You want two vital issues to efficiently retailer bulbs within the floor through the winter: (1) the bottom can’t freeze as a result of your bulbs may also freeze and die and (2) you want good drainage so the bulbs do not freeze. rotten. On the whole, growers in USDA Hardiness zones 6+ can go away their bulbs within the floor over the winter (we’re in zone 6b in Western North Carolina). In the event you develop in a heat local weather and there’s no probability your floor will freeze however it will get unbearably sizzling in the summertime, you possibly can “overwinter” the bulbs within the floor so long as The soil drains rather well.
One other disclaimer: no technique, whether or not planting bulbs within the floor or digging and storing them over the winter, is 100% foolproof. We skilled some injury once we left the tubers within the floor, however solely about 5% or much less. I am comfy with these odds as a result of we have skilled roughly the identical degree of loss digging, dividing, and storing tubers over the winter.
