Answer: Astilbe performs best in partial to full shade, in evenly moist, rich, organic, well-drained soils, but is somewhat tolerant of more harsh conditions as long as sufficient moisture is provided during the dry periods of summer. It is
propagated primarily by crown division, but also by seeds or tissue culture. Astilbe is a member of the Saxifrage Family, with no significant disease or pest problems, but is subject to wilting and dieback of the attractive foliage during hot, dry summer weather. You can avoid this dieback by providing regular summer irrigation. Astilbe's will adapt to growing in slightly acidic soil, so that should not present a problem. Try giving your plants plenty of water during the hottest months of the year.
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