Answer: Very alkaline soils can be challenging to many plants. Those that not only survive, but thrive, include Japanese Cherry, (including Weeping Cherry), Cercis (Judas-tree), flowering crabapple, and black pine. Shrubs include Cistus, Weigela, Buddleia (Butterfly Bush), Hebe, Mugo Pine, Dictamnus (Burning Bush), and Ceratostigma (hardy Plumbago).
For even more ideas, consult the book "Right Plant, Right Place" by Nicola Ferguson, published by Summit Books, ISBN# 0-671-52396-1.
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