The Secret of the Green Thumb |
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acid African violet amount animals anthers areas asters bacteria become branches bulbs called chemical chromosomes chrysanthemums colchicine color corms crop crossed develop diploid disease drought dwarf embryo evergreens fern fertilizer FIGURE flat flower buds foliage forest frost fungi fungus garden gene germinate gladiolus grafting grass green grown growth homozygous hormone humid hybrid inches insects kill layer leaf leaves light lilac lily maleic hydrazide minerals moist moss night temperature nitrogen nutrients orchids organisms ovary oxygen parent period petals pine pistil plant hormone plants pollen pots produced propagated recessive gene regions removed Rhododendron roots rose sand seed seedlings sepals sex cells shade short-day shrubs snapdragons soil species sperm spores sprayed spring stamens stem stigma stomata sulfate surface survive sweet peas tall tetraploid thrips tion tissue tomato transplanted trees and shrubs TtRr tubers Tulips varieties vegetation week April winter yellow