Before we look at the shopping list we need to think about the seed itself. “Heirloom” seeds and “species” seeds can be collected and will grow true year after year.
“Hybrid” seeds are attained when two varieties of the same species are crossed, either deliberately or by natural cross-pollination. Commercial hybrids are often bad news. The growers start by crossing two varieties of the same species then cross countless subsequent generations of hybrid results until the brightest bloom and the showiest flower is achieved. Often seed is irradiated to cause mutations that are then crossed. The same process changes a long, ungainly vine into a manageable and even miniature version of its former self. Commericial hybridizing manipulates fruit size too, how much a plant produces, and tries to engineer disease resistance. If you don’t know what GMO technology is you must, today do a Google search and learn in detail what it is. Then stand against it. This mad science holds the potential to destroy every plant on Earth. And before our beloved planet dies every human and every animal will starve to death.
Now, if you grow two heirloom varieties of tomatoes in your garden you can be certain that they will cross-pollinate and the resulting seed will be a hybrid. Two different squash, eggplant, pepper, basil, any two varieties of the same species will do this. So you have to choose between growing only one or buying new seed for the next year. But know also that one pack of seed is often enough for numerous growing seasons and will remain viable if stored in a cool, dry dark place (I keep mine in the refrigerator). Viability can be calculated at about a 10% loss per year with most varieties of seed.
So what do we lose to commercial hybridization beyond the inability to save seed? Plants often lose all of their fragrance and medicinal properties. They lose their inherent resistance to disease and infestation. And we lose as a consequence. That said, there are still many that have been responsibly bred and give us some good choices so the decision becomes ultimately yours. Not all catalogs make the distinction. The Cook’s Garden has a fabulous selection, much of which is the result of hybridizing. Seed Savers Exchange offers only heirlooms.
Please note that Seeds of Change offers only certified organic seed. Hybrid seed can be organic as well. And heirloom seed is not necessarily organic in origin. So what you will notice is that seed catalogs are carrying more and more organic seed but the seed that you want might not be available as organic. These decisions require some thought before your final choices are made.
I am going to list the vegetable contents of the Container Gardens that will soon follow to demonstrate that vegetables are often dependent on each other in order to thrive. The next blog post will take up the essential herbs and flowers I will call the Companion Group. All of the vegetable collections benefit from the Companion Group with a few exceptions that will be noted.
CONTAINER GARDENS
Lettuce, Bunching Onion, Radish, Carrot, Spinach
Pea, Bean, Carrot, Lettuce
Cabbage, Spinach, Beet, Celery
Corn, Squash, Melon, Mustard, Bean
Onion, Celery, Carrot
Tomato, Pepper, Onion
Eggplant, Cucumber
Potato, Horseradish, Pea
Grape, Pea, Mustard
The gardens are organized in this way because while the combinations enhance each other there are vegetables that do nothing but antagonize their neighbors if planted together. This list will help you determine what vegetable seed to acquire, even if you are uncertain if you will eat the produce, because the collections are companions to each other. For example, perhaps you love squash but hate mustard. The mustard is an essential companion to the squash. And I might add mustard is a beautiful plant.
Here goes. The * indicates that some anecdotal notes will follow the list.
Lettuce > Lactuca sativa (biennial) North Temperate Zone
*Bunching Onion > Allium fistulosum (perennial) Asia
Radish > Raphanus sativus (perennial) Eurasia
Carrot > Daucus carota var. sativus (biennial) Eurasia
Spinach > Spinacia oleracea (annual) SW Asia
*Pea > Pisum sativum (annual) Eurasia
*Bean > Phaseolus vulgaris (annual) North & South America
*Cabbage > Brassica oleracea (biennial) Eurasia
*Beet > Beta vulgaris/Crassa group (biennial) Europe & SW Asia
*Celery > Apium graveolens (biennial) North Temperate Zone
Corn > Zea mays (annual) North & South America
*Squash > Cucurbita species (annual) North & South America
*Melon > Cucumis species (annual) Africa
Mustard > Brassica juncea (annual) Eurasia
*Onion > Allium species Eurasia & Africa
*Pepper > Capsicum annuum (perennial) North & South America
Tomato > Lycopersicon lycopersicum (perennial) South America
Eggplant > Solanum melongena (perennial) Africa & Asia
*Cucumber > Cucumis species (annual) Asia
Potato > Solanum tuberosum (perennial) South America
Grape > Vitis vinifera (perennial) Europe
Strawberry > Fragaria vesca (perennial) North Temperate Zone
Sweet Potato > Ipomoea batatas (perennial) South America
*Assorted Salad Greens
SALAD GREENS
Sounds simple enough on the surface until you scrutinize the following list. First, we see that they include annuals, biennials, and perennials so let’s review. Both perennials and biennials can be grown or treated as annuals provided you don’t intend them to flower or intend to save the seed or intend to entice the beneficial insects that require the flowers. Mixes called Mesclan often contain a mix of annuals, biennials, and perennials. If you plan to hold over the perennials and biennials buy the seed separate and raise them in separate containers.
Even if you have no interest in salad some varieties are essential companions to the vegetables you might otherwise plan to grow. Enjoy their beauty and then give them to your neighbors or local food bank. Essential companions include mustard, chervil, chard, celery and spinach. I will do my best to manage an illusionary sense of control but at best the lists tend to slosh together a bit.
Lettuce > Lactuca sativa (biennial) North Temperate Zone
Arugula > Eruca vesicaria (annual) Mediterranean
Endive > Cichorium endiva (biennial) India
Mustard > Brassica juncea (annual) Eurasia [recommend Mizuma)
Cress > Barbarea verna (biennial) Europe
Cress > Lepidium sativum (annual) Egypt & West Asia
Water Cress > Nasturtium officinale (perennial aquatic) Europe
Chicory > Cichorium intybus (perennial) Europe
Purslane > Portulaca oleracea (annual) India
Chervil > Anthriscus cerefolium (annual) Eurasia
Corn Salad > Valerianella locusta (annual) Europe & North Africa
Chard > Beta vulgaris/Cicla Group (biennial) Europe & Asia
Kale > Brassica oleracea/Acephala Group (biennial) Europe
Cutting Celery > Apium graveolens (biennial) N. Temperate Zone
Dandelion > Taraxacum officinale (perennial) Eurasia
Broccoli Raab > Brassica oleracea/Ruvo Group (biennial) Eurasia
Sorrel > Rumex acetosa (perennial) Eurasia
Pak Choi > Brassica rapa/Chinese group (biennial) Eurasia
Italian Broccoli > Brassica oleracea (biennial) Eurasia
Spinach > Spinacia oleracea (annual) SW Asia
ONION
The Allium or Onion family is quite huge in which we find onions, bunching onions, leeks, shallots, garlic and chives. For any container group that calls for onion you can pick and choose as you please or simply use chives to fulfill the spot as an essential companion. Most are indigenous to the North Temperate Zone and are perennial except for Allium cepa, which is a biennial.
Garlic > Allium sativum (Southern Europe)
Leek > Allium ampeloprasum (Europe, Asia, North Africa)
Onion > Allium cepa (West Asia)
Shallot > Allium cepa (West Asia)
Bunching Onion > Allium fistulosum (Asia)
Chives > Allium schoenoprasum (Eurasia)
PEA
There are minor differences between peas and edible peapods, sometimes called snow peas. Sugar peas provide both edible pods and edible contents.
Pea > Pisum sativum
Peapod > Pisum sativum var. macrocarpon
BEAN
There are lots of beans. Some we eat the pods. Others we dry the contents or eat the contents fresh such as limas. Bean varieties are not necessarily botanically related. This blog only includes green beans.
BEET
If you don’t like beets you can grow chard as the essential companion.
Beet > Beta vulgaris/Crassa Group
Chard > Beta vulgaris/Cicla Group
CELERY
Stalk celery is a pain to grow and cheap to buy. Nevertheless, celery is an essential companion. Substitute cutting celery instead for its leafy greens. It is not only beautiful but also a salad green and seasoning in soup and stew.
CABBAGE
The cabbage family can be a tough call. Heads of cabbage are cheap to buy but they are beautiful to look at and the seed is believed magical. A lot of people turn their noses up at the thought of Brussels sprouts. But broccoli and cauliflower are not inexpensive. If none of these are your cup of tea note that mustard remains an essential companion.
Broccoli > Brassica oleracea/Botrytis Group
Cauliflower > Brassica oleracea/Botrytis Group
Cabbage > Brassica oleracea/Capitata Group
Brussels sprouts > Brassica oleracea/Gemmifera Group
Mustard > Brassica juncea
PEPPER
Bell, Sweet, Green > Capsicum annuum/Grossum Group
Chili, Cayenne > Capsicum annuum/Longum Group
CUCUMBER
Cucumber, Pickles > Cucumis sativus
Lemon Cucumber > Cucumis melo/Chito Group
MELON
Honeydew > Cucumis melo/Inodorus Group
Cantaloupe > Cucumis melo/Cantalupensis Group
Watermelon > Citrullus lanatus
SQUASH, PUMPKIN, GOURD
Squash, pumpkin and gourd are all members of the Cucurbita family that includes C. maxima, C. mixta, C. moschata, and C. pepo. Remarkably each classification yields such a mix of squash, pumpkin and gourd it’s of little value to list all of the combinations. If you are really curious about this look up Cucurbita in Hortus III. It’s wildly complex.
I can hear you now. This has been probably more Latin than you ever cared to know. But remember you are well on your way to becoming an expert grower and at some point you might actually need this. Just file it away for a rainy day.