What Is the Ideal Temperature Range for white alder 'Ruby spice'?
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white alder 'Ruby spice' · Clethra alnifolia 'Ruby Spice'
Grow in humus-rich, moist, well-drained, lime-free soil in dappled shade, in the shelter of an open woodland garden or a lightly-shaded shrub border; after pruning, mulch with well-rotted leaf mould
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