One of our garden club members has a fairly healthy looking rhodo which has been growing in a barrel for a while.* He wants to dig it out and give it to someone else for her garden, however, the lower leaves have all been eaten by what looks to me like root weevil.* Should he wash all the soil off the roots before replanting it to get rid of any weevils/larvae etc.?* Or should he just use Tanglefoot on the stem as I think the roots could so easily be damaged by washing the soil off. Or nematodes (from where or from whom)? * Any other suggestions?