rhododendron loose in spagnum
We have a very large bed with several rhododendrons of different sizes/types and all seem to be doing fine; however, the last 4 we planted don't seem to be situated firmly in the ground.
We dug large holes for them that we filled with spagnum which we soaked. They root ball and surrounding soil around the plants was extremely hard, so we soaked them as well before planting.
After a month, they still seem to be "loose" (could easily pull them up. Should I have mixed the spagnum better with the (clay) soil in the surrounding bed? Or they maybe not getting enough water so they can take root? I can still feel the soil clump if I dig my fingers down under the plants--it's not hard, but it hasn't completely broken up yet.