Plant Growing Guides

Oakleaf Lettuce

Lactuca sativa var. crispa

Oakleaf Lettuce Green Oakleaf

Lactuca sativa var. crispa

Oak

Quercus spp.

Oborozuki

Solanum lycopersicum 'Oborozuki'

Oilseed Radish

Raphanus sativus var. oleifer

Oklahoma White

Capsicum annuum

Okra Burgundy

Abelmoschus esculentus 'Burgundy'

Okra Clemson Spineless

Abelmoschus esculentus

Okra Emerald Perkins Spineless

Abelmoschus esculentus

Okra Emerald Green Velvet

Abelmoschus esculentus

Okra Perkins Mammoth

Abelmoschus esculentus

Onion

Allium cepa

Onion Candy

Allium cepa var. cepa 'Candy'

Onyx Black Bean

Phaseolus vulgaris

Opalescent Pepper

Capsicum annuum 'Opalescent'

Open-Pollinated Dent Corn

Zea mays indentata

Orach

Atriplex hortensis

Orach Magenta Magic

Atriplex hortensis 'Magenta Magic'

Orange Pepper

Capsicum annuum

Orchard Baby

Solanum lycopersicum 'Orchard Baby'

Oregon Pie Pumpkin

Cucurbita pepo

Ornamental Crabapple

Malus spp.

Ornamental Kale

Brassica oleracea var. acephala

Ornamental Kale Lacinato

Brassica oleracea var. acephala

Ornamental Kale Nagoya

Brassica oleracea var. acephala

Red Russian Ornamental Kale

Brassica oleracea var. acephala

Ornamental Kale White

Brassica oleracea var. acephala

Osaka Purple Mustard

Brassica juncea var. osaka

Ostbo Red

Solanum tuberosum 'Ostbo Red'

Agroforestry Trees

Various species (Alnus, Acacia, Gliricidia, Sesbania, Erythrina, etc.)

American Plum

Prunus americana

Annual Crops Requiring Nitrogen Enrichment

Various species (Brassica oleracea, Solanum lycopersicum, Zea mays, etc.)

Brassica Microgreens

Brassica oleracea and related Brassica species

Cool-Season Salad Greens

Various species (Lactuca sativa, Cichorium, Brassica, Arugula, Spinacia, etc.)

Edible Algae

Various species (Spirulina platensis, Chlorella vulgaris, Ulva lactuca, Saccharina japonica, others)

Other Fruit Trees

Various species

Oak and Maple Trees

Quercus spp. and Acer spp.

Leafy Greens (Mixed)

Various species

Legume Crops (Other)

Fabaceae family (various genera)

Legumes (General)

Fabaceae family

Microgreens

Various species (seedlings of herbs, vegetables, and grains)

Nitrogen-Demanding Crops

Various species

Salad Greens (Mixed Varieties)

Various species (Lactuca sativa, Cichorium endivia, Eruca vesicana, Spinacia oleracea, etc.)

Salt-Tolerant Crops

Various species

Other Stem Plants

N/A - Multiple species

Vegetable Crop Rotation

N/A - Cultural Practice

Outredgeous Red Radish

Raphanus sativus var. sativus