FB discussion on radicle damage
Guy Sternberg One other tip, which might seem to contradict the usual intact-root rule: if you plan to transplant them later, clip the tip of the root off now. Each clipped root will regrow with numerous (~10) branch roots, slowing the taproot problem if they're in a pot and making them easier to dig up and move if they are grown outdoors. But if you do this, clip only the tip -- do not break them off at the acorn!
If you must store them in the fridge all winter, be sure the roots are aimed downward in the bag. Geotropism will direct their growth downward, and if you aim them otherwise they will twist and turn to auto-correct. Poke a few tiny holes in the bag for air exchange, and place some moist sphagnum with them to maintain moisture.
My first choices, and everyone has their own system, would be to plant them outdoors now in thawed soil under a half-inch wire mesh rodent covering topped with deep, porous mulch; or plant them in pots and store the pots barely above freezing until spring. Use bottomless pots placed with an air space below so the roots will air prune as they grow.
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December 7 at 11:10am
Greg Bruhn Guy, Good advice. I plant acorns in 5 inch tall bottomless "Treepots" surrounded top and sides with plenty of sharp pea gravel and 1/4 inch wire mesh on top. I once germinated some beans seeds under 1/2 wire mesh and the squirrels were able to access the sprouting beans through the wider mesh with their paws.
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December 8 at 9:25am
Lucas Machias "clip only the tip -- do not break them off at the acorn! "
WHY WHAT HAPPENS?
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Yesterday at 12:22pm
Greg Bruhn If you break them off at the acorn, there'll probably be not enough stored food to produce a new flush of roots.
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Yesterday at 12:27pm
Guy Sternberg Greg Bruhn yes, and sometimes you might even destroy the root primordium and the seed cannot regenerate even if it has enough energy remaining. The cotyledons become separated from the embryo. Just be careful and remember that a germinating acorn is like human infant, to be handled gently.