Bagpod [Sesbania vesicaria]
Bahiagrass [Paspalum notatum]
Bald Cypress [Taxodium distichum]
Barley [Hordeum vulagare]
Barrelcactus, California [Ferocactus acanthodes]
Barrelclover [Medicago truncatula]
Basil, Sweet [Ocimum basilicum]
Bauhinia variegata [Mountain Ebony]
Bean, Adsuki [Vigna angularis]
Bean, Broad [Vicia faba]
Bean, Castor [Ricinus communis]
Bean, Garden [Phaseolus vulgaris]
Bean, Lima [Phaseolus lunata]
Bean, Tepary [Phaseolus acutifolius]
Beech, American [Fagus grandifolia]
Beech, European [Fagus sylvatica]
Beet, Common [Beta vulgaris]
Begonia [Begonia x argenteo-guttata]
Begonia x argenteo-guttata [Begonia]
Begonia [Begonia x tuberhybrida]
Begonia x tuberhybrida [Begonia]
Bellis perennis [Lawn Daisy]
Bentgrass, Colonial [Agrostis capillaris]
Bentgrass, Velvet [Agrostis canina]
Berseem [Trifolium alexandrium]
Beta vulgaris [Common Beet]
Betula alleghaniensis [Yellow Birch]
Betula nana [Bog Birch]
Betula papyrifera [Paper Birch]
Betula pendula [European White Birch]
Betula platyphylla [Japanese White Birch]
Betula populifolia [Gray Birch]
Betula pubescens [Downy Birch]
Birch, Bog [Betula nana]
Birch, Downy [Betula pubescens]
Birch, European White [Betula pendula]
Birch, Gray [Betula populifolia]
Birch, Japanese White [Betula platyphylla]
Birch, Paper [Betula papyrifera]
Birch, Yellow [Betula alleghaniensis]
Bittercress, Hairy [Cardamine hirsuta]
Black-eyed Susan [Rudbeckia hirta]
Black Cutch [Acacia catechu]
Blackberry [Rubus]
Blackgram [Vigna mungo]
Blackwood [Acacia melanoxylon]
Bluegrass, Alpine [Poa alpina]
Bluegrass, Annual [Poa annua]
Bluegrass, Kentucky [Poa pratensis]
Bluegrass, Rough [Poa trivialis]