Gardening Answers Knowledgebase

Abelia Abies Abronia latifolia Acacia Acanthus mollis Acer Acer circinatum Acer palmatum Acer palmatum dissectum Aceraceae (Maple family) Achillea Acorus Actaea Actinidia Adiantum pedatum Adoxa moschatellina Aegopodium Agapanthus Agavaceae (Agave family) Agriculture Ailanthus altissima Air pollution Ajuga Akebia Alcea Aleuria Algae Allelopathy Allergies Allium Allium tricoccum Almanacs Alnus Aloe cameronii Alpine and rock gardening Alstroemeria Alyssum Amaryllidaceae (Amaryllis family) Amaryllis Amelanchier Amelanchier alnifolia Anaphalis margaritacea Anemone Animal-plant relationships Animals Annuals and biennials Antirrhinum Aphanes australis Aphids Apple anthracnose Apples Apples--Diseases and pests Aquatic plants Aquilegia Aquilegia formosa Arboreta Arboretums and botanical gardens Arboretums and botanical gardens--Pacific Northwest Arboretums and botanical gardens--Seattle Arboretums and botanical gardens--Washington Arboriculture Arborist Arbors Arbutus Arbutus menziesii Arbutus unedo Arctomecon californica Arctostaphylos Aromatic plants Artemisia Artichokes (common) Arundo donax Asclepias Aspalathus Asparagus Aster Astragalus Athyrium Athyrium filix-femina Attracting wildlife Aucuba Australian plants Autumn Azadirachta indica Azara Baccharis Bacillus thuringiensis Backyard gardens bacteria Bacterial diseases of plants Bamboo Baptisia bats Beans Beans--Diseases and pests Beans--Varieties Beesia Begonia Beneficial insects Berberis Berberis aquifolium Berberis nervosa Berberis x hortensis Bergenia Bergera koenigii Berries Berries--Diseases and pests Beta vulgaris Betula Bible plants Big trees Biofumigation Biography Biological control Biological diversity Biological diversity conservation bioluminescence Birch Bird pests Birds Blackberries Blechnum gibbum Blechnum spicant Bonsai Booklist Bookstores Borinda Botanical illustration Botanical nomenclature Botanical pesticides Botanists Botany Botany nomenclature Botany--Pacific Northwest Botany--Washington Bougainvillea Brassica oleracea (Acephala group) Brassica oleracea (Capitata group) Brassicaceae (Mustard/Cress family) brewing Bromeliaceae (Bromeliad family) Bromus Brugmansia Brunnera Buchloe Budding (Plant propagation) Buddleia Buddleja Budget gardening Bulbs Burl Business Butterflies Buxus Cactaceae (Cactus family) Cactus and Succulents Calamagrostis Calathea Callicarpa Callistemon Calluna Calocedrus Camellia Camellia sinensis Campsis Canker (Plant disease) Canna Capparis Capsicum Carex Carex macrocephala Carex stipata Carpinus Caryopteris Cassia Casuarina Catalogs caterpillars Catha cauliflory Ceanothus Cedrus Centaurea cyanus Ceratonia siliqua Cercidiphyllum japonicum Cercis Chaenomeles Chamaecyparis Chamaemelum Chelidonium majus Chenopodium foliosum Chenopodium quinoa Chickens Children's gardens and programs Children's literature Children's programs Chilean plants Chinese Gardens Chinese plants Chionanthus Chionodoxa Christmas trees Chrysanthemum Cicer arietinum Cinchona Cinnamomum Cistus Citrullus lanatus Citrus Citrus limon Citrus medica Cladrastis kentukea Clematis Clematis vitalba Clerodendrum Climate Climate--Pacific Northwest Climatic zones Climbing plants Codling moth Coffea Coffee Colchicum autumnale Cold protection of plants Coleus Color Color guides Color in gardening Common names Community gardens Compositae (Daisy family) Compost Compost contamination Conifers Conifers--Identification Conifers--Propagation Conservation biology Conservation of natural resources Container gardening Continuing education Control of wildlife pests Convallaria Convolvulus arvensis Convolvulus soldanella Cooking Coreopsis cork Corn Cornaceae (Dogwood family) Cornus Cornus alba Cornus canadensis Cornus florida Cornus kousa Cornus mas Cornus nuttallii Cornus stolonifera Cortaderia Corylopsis Corylus Corylus cornuta Cotinus coggygria Cotinus obovatus Cotoneaster Cover crops Crassula Crataegus Crataegus douglasii Crataegus pinnatifida Crinum Crocosmia Crocus Crocus sativus crop rotation Crops and climate Cross-pollination Cryptomeria Cucumis melo Cucumis sativus Cucurbita Cucurbitaceae Cupressocyparis Cupressus Cuscuta Cut flowers Cutworms Cycads Cyclamen Cyclopia Cydonia oblonga Cyrtomium Cytisus Cytisus scoparius Daemonorops draco Dahlia Daisies Daphne Database Datura Daucus carota Davidia Deer Delonix regia Delphinium Dendrobium Deppea Deschampsia cespitosa Desert gardening Dianthus Dictamnus Dierama Digitalis Dioscorea Diospyros kaki Dipelta floribunda disbudding Disease-resistant plants dogs Dracaena Dracunculus Drought stress Drought-tolerant plants Droughts Dryopteris Dutch elm disease Dwarf conifers and shrubs Earthworms Echeveria Echinacea Echinops Echium plantagineum Ecology Economic botany Ecosystem management Ecosystems Ecosystems--Pacific Northwest Edible flowers Edible landscaping Edible plants edible seeds Edible wild plants Effect of light Effect of pollution Effect of storms Eisenia fetida Elaeagnus Elymus Elymus mollis Embothrium coccineum Encyclopedia Endangered plants Endemic plants--Washington English gardens Ensete Environmental education Epilobium canum Epimedium Epiphyllum Equisetum Erica Ericaceae (Heath family) Eriobotrya japonica Eriogonum ovalifolium Eruca vesicaria ssp. sativa Erythronium Espaliers etc.) Ethnobotany Eucalyptus Eucomis Euonymus Eupatorium Euphorbia Euphorbia pulcherrima Eutrema Fabaceae (Pea family) Fagopyrum esculentum Fagus Faidherbia Failure to flower Failure to fruit Fall foliage Fargesia Farmers' markets fasciation fastigiate trees and shrubs Fatsia Ferns Fertilizers Ferula assa-foetida Festivals Festuca Festuca rubra Ficus Ficus benjamina Ficus carica Field crops Filipendula Firescaping Flower arrangement Flower color Flower shows Flower shows--Pacific Northwest Flowering cherries Flowering of plants Flowering trees Foeniculum vulgare Foeniculum vulgare v. azoricum Foliage plants Food crops food safety Food systems Forest products Forests and forestry Fothergilla Fragaria Fragrant flowers Fragrant gardens Fraxinus Fraxinus latifolia Frederick Law (1822-1903) Frogs Frost Fruit Fruit ripening Fruit trees Fruit trees--Cross-pollination Fruit--Care and maintenance Fruit--Diseases and pests fruit--preservation Fuchsia Fungal diseases of plants Fungi and mushrooms Fungicides Galanthus Galium galls Ganna Walska Garden calendar Garden crafts Garden design Garden fertilizers Garden history Garden pests Garden structures and building materials Garden tours Gardenia Gardening on the Web Gardening personality Gardening to attract birds Gardens Gaultheria Gaultheria shallon Gaura genetically modified seeds Genista Geranium Gerbera Germination Ginkgo biloba Gladiolus Gladiolus murielae Gleditsia Glehnia leiocarpa Glyceria Goats government assistance Grafting Grain Grapes--Diseases and pests Grass-carrying wasps Grasses Green roofs (Gardening) Greenhouses Grevillea Ground cover plants Growth Guizotia abyssinica Gundelia tournefortii Gunnera Gypsum Habitat conservation Habitat Conservation--Pacific Northwest Halleria lucida Haloxylon Hamamelis Hamamelis mollis Hardy plants Harvesting time Hebe Hedera Hedera helix Hedera hibernica Hedges Heirloom varieties Helenium Helianthemum Helianthus tuberosus Helichrysum Helleborus Hemerocallis Herbaria Herbaria--Pacific Northwest Herbarium specimens Herbicides Herbs Heuchera Hibiscus Hierochloe odorata Hillside planting Hippophae Historic trees Holly Holodiscus discolor Honeybee diseases Honeybees and pollinators Hormones Horticultural crops Horticultural literature Horticultural oil Horticultural therapy Horticultural writers Horticulture Horticulture--Pacific Northwest Horticulture--Washington Hosta House plants Hovenia Hoya bella Huckleberries Human health Human-plant relationships Hummingbirds Humulus lupulus Hunting Brook Gardens Hybridization Hydrangea Hydrangeaceae (Hydrangea family) Hydroponics Iberis sempervirens Ilex Indoor gardening Insect pests Insect pests--Control Insect pests--Identification Insect-plant relationships Insecticidal soap Insects Insects as carriers of plant disease Integrated pest management Invasive plants Invasive plants--Control Invasive species Iochroma australe Ipomoea batatas Ipomoea pes-caprae Ipomopsis rubra Iris Iris foetidissima 'Variegata' Irrigation Irrigation water quality Ixia Japanese gardens Japanese plants Jasminum Juglans Juncaceae (Rush family) Juncus effusus Juncus ensifolius Juniperus Kalanchoe Kalmia Katsura Key Kochia scoparia Kolkwitzia amabilis Laburnum Lactuca Ladybugs Lagerstroemia Lamium Lamium galeobdolon Land treatment of wastewater Land Use Rule--Seattle Landscape architecture Landscape design Landscape design--Seattle Landscape gardening Landscape industry Landscape irrigation Landscaping Landscaping drain fields Landscaping industry Lardizabalaceae Larix Lathyrus littoralis Lathyrus odoratus Laurus nobilis Lavandula Lavandula stoechas Lavatera Lawn alternatives Lawns and turfgrasses Lawns--Care and maintenance Laws and regulations Leaf abscission Leaf color Leaf marcescence Leaves Ledebouria cooperi Ledum glandulosum Legumes Leucothoe Lewisia Leycesteria Libraries Lichens light pollution Ligustrum Liliaceae Lilium (Lily family) Lilium columbianum Limonium Linaria Lindera Liquidambar Liriope liverworts Lobularia Lolium Lonicera Lotusland Low maintenance gardening lunar gardening Lupinus Luzula Lycium barbarum Lycopersicon Lysichiton americanus Lysimachia Magnolia Magnolia grandiflora Mahonia aquifolium Malus Malus domestica Malus fusca Malus sylvestris Maple maple syrup Master gardeners Matteuccia Meadow gardening Mealybugs Meconopsis Medicinal herbs Medicinal plants Melica Mentha Mexican plants Microirrigation Micropropagation Miniature Miscanthus Moles Morella californica Morocco Morus Mosaic diseases mosquitoes Moss Mosses Moths Mucuna Muhlenbergia Mulching Municipal government publications--Seattle Musa Mutation mutualism Myriophyllum spicatum Myrtus Myxomycetes Nandina domestica Narcissus National parks and reserves--United States Native plant gardening Native plants Native plants--Alaska Native plants--British Columbia Native plants--California Native plants--Care and maintenance Native plants--Idaho Native plants--Oregon Native plants--Pacific Northwest Native plants--Washington Natural landscaping Nature craft Nature study Neighbor law Nelumbo Neomarica Nerine New Zealand plants Nicotiana Noise pollution Noxious weeds Noxious weeds--Washington Nurseries Nuts Nymphaea Nyssa Ocimum Oemleria cerasiformis Old growth forests Olea europaea Oleaceae (Olive family) Olmsted Onions Ophiopogon planiscarpus 'Nigrescens' Oplopanax horridus Opuntia Orchidaceae (Orchid family) Orchids Organic farming Organic fertilizers Organic gardening Origanum Ornamental grasses Ornamental horticulture Oryza Osmanthus Oxalis oregana Oxydendrum arboreum P Patches Pachysandra Packing for shipment Paeonia Palms Papaver Papaveraceae (Poppy family) parasitic plants Parking strips Parks Parrotia Passiflora Paulownia tomentosa pectin Pennisetum Penstemon Perennials Perennials--Care and maintenance Periodicals Permaculture Persea Persicaria Pesticide safety measures Pesticides Pesticides and the environment Pesticides and wildlife Pests Petroselinum Pets Phalaenopsis Philadelphus Philadelphus lewisii Phlox Phormium Photinia photoperiodism Phygelius Phyllostachys Physocarpus Phytophthora Picea Pieris pinching Pinus Pinus ponderosa Pinus sabiniana Pistacia Pisum Pittosporum Plant anatomy Plant and garden societies Plant and garden societies--Pacific Northwest Plant and seed importation Plant care Plant collectors Plant conservation Plant cuttings Plant diseases Plant diseases--Control Plant diseases--Diagnosis Plant diversity conservation Plant ecology Plant exchanges and donations Plant growth Plant growth inhibiting substances Plant health Plant identification Plant inspection Plant litter Plant longevity Plant nutrients Plant patents and registrations Plant phenology Plant physiology Plant protection--Law and Regulations Plant quarantine Plant Recommendation Plant reproduction Plant sales Plant training Plant varieties Plant-soil relationships Plant-water relationships Planting Planting design Planting time Plants and history Plants--Symbolic aspects Platanus Plum Poa Poa macrantha Poisonous plants Pollen Pollination Polygonum Polygonum cuspidatum polymer-coated fertilizer Polystichum Polystichum munitum Ponds and water gardening Pontederia cordata Populus Populus balsamifera ssp. trichocarpa Potatoes Potting soils Poultry farms Powdery mildew diseases Prairie planting Primula Propagation Pruning Pruning shrubs Pruning trees Prunus Prunus armeniaca Prunus emarginata Prunus laurocerasus Prunus lusitanica Prunus mume Prunus padus Prunus persica Prunus tomentosa Prunus virginiana demissa Pseudotsuga menziesii Pteridium aquilinum Publishers Pulmonaria Pumpkin Punica granatum Pyracantha Pyrus Quercus Quercus alba Quercus garryana Quercus palustris Quercus suber Quirky rain barrels Rain garden Raised bed gardening Ranunculaceae (Buttercup family) Ranunculus Rare plants Recycling (Waste Reference books Restoration ecology Restoration Ecology--Pacific Northwest Revegetation Reversion Reviews Rhamnus purshiana Rheum x hybridum Rhododendron Rhododendron macrophyllum Rhododendrons--Diseases and pests Rhododendrons--Varieties Rhododendrons--Washington Rhus Ribes Roadside plants Rock gardens root pruning Root weevils Rooting Roots Roots--Diseases and pests Roots--Wounds and injuries Rosa Rosa canina Rosa gymnocarpa Rosa nutkana Rosaceae (Rose Family) Rubus Rubus discolor Rubus idaeus Rubus leucodermis Rubus spectabilis Rudbeckia Rumex crispus Sagittaria latifolia Salad greens Salix Salmon salt-tolerant plants Salvia Salvia fruticosa Salvia hispanica Salvia pomifera Salvia yangii Sambucus Sambucus cerulea Sambucus racemosa Santalum Sarcococca Sassafras albidum Sawflies Scale insects Schisandra chinensis Schizachyrium Schizophragma hydrangeoides Schizostylis Schlumbergera Schoenoplectus Sciadopitys verticillata Screens Scrophularia Scrophulariaceae (Figwort family) Seaside gardening Seaweed Sedum Seed borne plant diseases Seed catalogs Seed companies and seed sources Seed dispersal Seed dormancy Seed exchanges Seed storage Seedlings Seedlings--Transplanting Seeds Sempervivum Senecio jacobaea Senna Sequoia sericulture Sewage sludge Shade gardening Shade trees Shade-tolerant plants Sheet mulching Shepherdia canadensis Shrubs Shrubs--Care and maintenance Silene silkworm Silybum marianum Skimmia Slope stabilization and soil erosion Slugs Smilax bona-nox smoked foods Snails Sod webworms Software Soil amendments Soil compaction Soil conservation soil contamination Soil ecology Soil requirements Soil testing Soilborne plant diseases Soils Solanaceae (Potato family) Solanum melongena Solanum tuberosum Sorbus South African plants Spartium junceum Species Rhododendrons Spices Spiders Spinacia oleracea Spiraea douglasii Square foot gardening Squirrels Stachys Starlings Stipa Stone in landscape gardening Strawberries Strelitzia reginae Stylophorum diphyllum Styrax Sustainable agriculture Sustainable architecture Sustainable horticulture Symphoricarpos albus Symphyotrichum Symphytum officinale synthetic turf Syringa Tagetes Tamarix Tannins Taraxacum officinale Taxodium Taxus baccata Taxus brevifolia Tent caterpillars - control Thalia Thalictrum Thamnocalamus Theobroma cacao Throughfall Thuja Thuja occidentalis Thuja plicata Thujopsis Thymus Tiarella Tigridia pavonia Tilia Timber Tolmiea Tomatoes Tomatoes--Care and maintenance Tomatoes--Diseases and pests Tools and equipment Topiary work Trachelospermum Trachystemon orientalis Training plants Transpiration Transplanting Trapa natans Travel and tourism Tree hazard evaluation Tree identification Tree planting Tree protection Tree roots Tree staking Trees Trees in cities Trees in cities--Seattle Trees in literature Trees--Care and maintenance Trees--Diseases and pests Trees--Diseases and pests--Washington Trees--Laws and legislation Trees--Washington Trees--Wounds and injuries Trifolium Trillium Tropical plants Tsuga Tsuga heterophylla Tulipa Typha latifolia Ulmus Umbellularia californica Umberto Pasti University of Washington Urban agriculture Urban horticulture Urban land use Urban parks Useful plants Vaccinium Vaccinium ovatum Vaccinium parvifolium Vancouveria hexandra Variegation Vegetable gardening Vegetable harvesting Vegetable storage Vegetable varieties Vegetables--Diseases and pests vegetables--preservation Vegetative propagation Verbascum Verbena Vermicomposting Veronicastrum Verticillium Viburnum Vicia Vicia faba Victoria amazonica Vinca Viscum album Viticulture Vitis Washington Park Arboretum Washington State University Cooperative Extension Water absorption Water conservation Water gardens Water quality Water requirements Water reuse Water-absorbing polymers Weather Web directories Web forums Weblogs Weed control Weed control--Law and regulations Weed control--Pacific Northwest Weeds Weigela Wetland ecology Wetland plants Wetlands Whiteflies Wildfires Wildflowers Wildlife pests Wildlife--Pacific Northwest Wilt diseases Wind-tolerant plants Winter gardening wireworms Wisteria Withania somnifera Women gardeners Wood Wood chips Wood preservatives Woody plant cuttings Woody plant propagation Woody plants--Diseases and pests x Amarine x Citrofortunella floridana Xeriscaping Xylosma Yucca Zamia Zamioculcas Zantedeschia aethiopica Zea mays Zelkova Zingiber officinale Zinnia