Plants & Gardens, 第 20～22 巻

acid alum aphid applied Arboretum azalea bark beetle bloom blue boil bonsai branches branchlets Brooklyn Botanic Garden brown buds bulbs chemical clusters color conifers container Cotoneaster cover Culture disease dwarf dye bath dye plants early espalier evergreen feet high ferbam flowers foliage Forsythia fruits fungus Gottscho-Schleisner grass green ground growers growing growth Habit Handbook hardy herbicides Home Garden Horticulture Hybrid Tea inches high inches long insects Japan Japanese Japanese white pine juniper kinds landscape lawn leaves light lindane Low-Growing malathion Miniature moisture mordant mulch native nematodes nursery ornamental ornamental plants ounce Outstanding Features pests pine pink pruning Rhododendron Rinse roots roses season seedlings seeds shade shrub simazine soil species spray spreading spring spruce stems stone summer tall tion treatment trees and shrubs trunk varieties Viburnum vines wall winter wire wood wool yellow York