I have a few collected trees and after watching the streams, listening to some podcasts, and looking into it further, I feel would benefit from being on a heat mat this winter.
My question is when to put the trees onto the heat?
I have a collected Ponderosa, Virginia pine, Live oak and Virginia juniper. I have an air layered (this season) Swamp oak and Japanese maple that I was planning to put in the heat bed. It’s been unseasonably warm around here, most deciduous are still in green leaf.
What I think I’ve learned so far is that all these trees need the cold for dormancy and that temperatures from 70-80° are optimal for root growth. I’m unsure whether I should wait until we get a few cold spells / frosts to get them going into dormancy before putting them on the heat or to put them on the heat now before the soil temperature drops below 42° and root grow stalls. I did find several threads about heatbeds, heat bed maintenance, transitioning off of heatbeds, and similar and gained a lot from reading them. Clearly this is just me struggling with horticultural concepts and it’s probably obvious…but I figured I’d ask those with experience instead of just going with my gut and messing up. Any help would be much appreciated, thanks in advance.