my penstemon cuttings have grown a few small new leaves. When should I repot them into individual pots? And in what type of compost? They are on an unheated window sill
Monty says to let the roots grow until they fill their little compartment (if in a seedlings tray) then repot. Then do the same again into a larger pot. He is my guru
I usually check to see if the roots are starting to come through the bottom of the pot and then gently shake off all the compost and separate them, pot on in multi-purpose and water from the bottom.