Trees, Shrubs and Conifers: What's this on my Betula nigra 'summer cascade'?, 1 by johnnyvino
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In reply to: What's this on my Betula nigra 'summer cascade'?
Forum: Trees, Shrubs and Conifers
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johnnyvino wrote: We've grown this at my nursery for several years in Oregon. There are 3 things we see in our stock plants. Nickle deficiency (Leaf shriveling and cupping), wooly aphid on occasion which will curl the leaves and leave the white stuff, and then the eriophyte mites that leave unmistakable blisters all over the surface of the leaves, but nothing else. |