Base watering, which involves submerging the pot in h2o, is perfect for species that gain from constant humidity.hippocastanumAmelanchier lamarckiiBerberis thunbergiiBetula pendulaBuxus sempervirensCarpinus betulusCarpinus japonicaCarpinus turczaninowiiChaenomeles japonicaChaenomeles speciosaCornus masCorylus avellanaPest and Sickness Control: Chec