Key to abbreviations in the table below:
| Family | Crop | Genus and Species | Flowering type | Selfed(S) or Crossed (C) or both (CS) | By* | Life Cycle# | Cultivar Type+ | Remarks |
|---|---|---|---|---|---|---|---|---|
| Chenopodiaceae | ||||||||
| beet | Beta vulgaris | perfect | C | W | B | OP | All forms cross, including sugar beet. | |
| Swiss Chard | Beta vulgaris | perfect | C | W | B | OP | Crosses with other beets. | |
| spinach | Spinacia oleracea | dioecious | C | W | A | OP or H | Also contains perfect-flowered plants | |
| Asteraceae | ||||||||
| lettuce | Lactuca sativa | perfect | S | A | PL, G | Seed may carry lettuce mosaic | ||
| globe artichoke | Cynara scolymus | perfect | C | I | P | C or OP | Seeded cultivars are available. Crown divisions used commercially | |
| Jerusalem artichoke | Helianthus tuberosus | perfect | C | I | P | C | Seedlings variable | |
| Convolvulaceae | ||||||||
| sweet potato | Ipomea batatas | perfect | C | I | P | C | Propagate by rooted shoots from tubers-often do not flower | |
| Brassicaceae | ||||||||
| cabbage | Brassica oleracea | perfect | C | I | B | OP or H, G | All vegetables in this group cross readily; are often self-incompatible. | |
| cauliflower | Brassica oleracea | perfect | C | I | B | OP or H, G | ||
| Brussels sprouts | Brassica oleracea | perfect | C | I | A | OP or H, G | ||
| kohlrabi | Brassica oleracea | perfect | C | I | B | OP or H | ||
| kale | Brassica oleracea | perfect | C | I | B | OP or H | ||
| collards | Brassica oleracea | perfect | C | I | B | OP or H | ||
| turnip | Brassica rapa | perfect | C | I | B | OP or H, G | ||
| rutabaga | Brassica napobrassica | perfect | C | I | B | OP | ||
| chinese cabbage | Brassica pekinensis | perfect | C | I | A | OP or H, G | ||
| radish | Raphanus sativus | perfect | C | I | A | OP | Crosses with wild forms. | |
| Cucurbitaceae | ||||||||
| cucumber | Cucumis sativus | monoecious | C | I | A | OP or H | Does not cross with muskmelon. | |
| muskmelon | Cucumis melo | andromonoecious or monoecious. | C | I | A | OP or H, G | Includes netted (cantaloupe), honeydew, casaba, and mango melon. | |
| squash and pumpkins | Cucurbita pepo | monoecious | C | I | A | OP or H | ||
| Cucurbita maxima | monoecious | C | I | A | OP or H | |||
| Cucurbita moschata | monoecious | C | I | A | OP or H | |||
| watermelon | Citrullus vulgaris | monoecious | C | I | A | OP or H | Seedless cultivars are sterile triploids. | |
| Poaceae | ||||||||
| sweet corn | Zea mays | monoecious | C | W | A | OP or H, G | All corn types (pop, flint, dent, flour, sweet) cross. | |
| Fabaccae | ||||||||
| bean | Phaseolus vulgaris | perfect | S | A | PL, G | Seed can carry serious diseases. | ||
| lima | Phaseolus lunatus | perfect | S | A | PL | |||
| pea | Pisum sativum | perfect | S | A | PL, G | |||
| cowpea | Vigna sinensis | perfect | S | A | PL | |||
| soybean | Glycine max | perfect | S | A | PL, G | |||
| Liliaceae | ||||||||
| asparagus | Asparagus officinalis | dioecious | C | I | P | C | Propagate by seed, not by division. | |
| onion | Allium cepa | perfect | C | I | B | OP or H | Includes shallots (usually propagated by division). | |
| garlic | Allium sativum | perfect | P | C | Rarely produce seed. | |||
| Welsh onion | Allium fistulosum | perfect | C | I | B | OP | Does not cross with Allium cepa. | |
| leek | Allium ampeloprasum | perfect | C | I | B | OP | ||
| Solanacae | ||||||||
| tomato | Solanum lycopersicum | perfect | S | A | PL or H, G | |||
| pepper | Capsicum annuum | perfect | CS | I | A | PL or H, G | ||
| eggplant | Solanum melongena | perfect | CS | I | A | PL or H, G | ||
| potato | Solanum tuberosum | perfect | S | P | C, G | Cultivars that produce true seed are under development; propagate by tubers | ||
| Apiacae | ||||||||
| carrot | Daucus carota | perfect | C | I | B | OP or H, G | Crosses readily with wild carrots | |
| celery | Apium graveolens | perfect | C | I | B | OP, G | ||
| celeriac | Apium graveolens var. rapaceum | perfect | C | I | B | OP | ||
| parsley | Petroselinum crispum | perfect | C | I | B | OP |
Adopted from Baggett, Horticulture 1978, Vol. 56, No. 8, p. 15-25 and updated by Greg Welbaum 1996.