Drought
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Acanthus hungaricus ‘White Lips’ (Bear’s Breeches)
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Acanthus x ‘Morning Candle’ (Bear’s Breeches)
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Achillea millefolium ‘Paprika’ (Yarrow)
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Achillea millefolium (Yarrow)
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Achillea ptarmica (Sneezewort)
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Achillea tomentosa (Woolly Yarrow)
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Achillea x ‘Terracotta’ (Yarrow)
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Agastache foeniculum (Anise Hyssop)
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Agave parryi ssp. truncata (Agave)
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Agave schidigera ‘Royal Flush’ (Century Plant)
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Allium giganteum (Ornamental Onion)
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Allium karataviense (Ornamental Onion)