Sprouting Acorns?
4 messages in this thread
I'd like to know how to sprout acorns from an oak tree. I guessed they need
to be stratified, but I tried it and they simply rotted. I started with
fresh acorns, freshly dropped. I suspect I've got the timing all wrong.
Does anyone know about this?
Hello John,
In nature, the sprouting process begins as soon as the acorn gets water
after dropping on the ground. The germinating acorns go dormant and need
several months of chilling to sprout. Stratifying acorns is one method of
duplicating that process. If you didn't have luck stratifying – you might
try another method (providing you have the refrigerator space!) Soak
acorns in water for 24-48 hours (change the water once or twice). Drain
acorns and store in the refrigerator in a covered container. Once a week
check acorns for mildew and rinse with water. If you find acorns with
mildew, throw them away. Make sure all water is drained from container,
cover it and return it to the refrigerator. Turn can over every other day.
Gradually acorns will swell and in a couple of months you will see roots
cracking through. Plant acorns before the tap root gets too long. If you
are going to plant in a container, you may want to trim the taproot when
it reaches 2-3 inches, removing the bottom 1/2 inch. This encourages a
branching root system. Taproots are hard to manage in containers. Plant
acorn sideways or pointing down. You can start by planting in a 4-inch
pot, but it should be potted in at least a gallon size container by spring
to give the roots room to flourish. Hope you have good luck with this
batch of acorns!
Alison
Thank you. I had stratified by wrapping in moist towel in a plastic bag in
the 'fridge, but your method makes more sense in retrospect. Are you saying
they'll sprout in the refrigerator? And now for another question. Do all
oaks drop their acorns in the fall?