1. A plant that was originally diploid in its chromosome makeup, but which was chemically treated with colchicine and altered to tetraploid. Conversions may or may not be stable. Conversions are distinguished by the prefix “Tet” or “Tetraploid” as in TET BARBARA MITCHELL. The hybridizer and the converter are both identified. The hybridizer’s name is listed first, followed by a slash and the name of the person who performed the conversion. In the example of TET. BARBARA MITCHELL, Pierce/Stamile. Also see: Chimera

2. What happens to a lawn when a daylily gardener moves in.

3. What happens to a mixed perennial bed when a gardener discovers daylilies.

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The American Daylily Society