What are the positive tree species?

Walnut seedlings, apple seedlings, hawthorn seedlings, jujube seedlings, peach seedlings, begonia seedlings, persimmon seedlings, pear seedlings, cherry seedlings, apricot seedlings, grape seedlings, pepper seedlings, Pinus bungeana, Ligustrum lucidum, cedar, weeping willow, Robinia pseudoacacia seedlings, Populus tomentosa, fast-growing poplar, 84k poplar, 107, 65438+.