Interplanting is a growing method that will allow you to fit more vegetable plants in a single planting bed. It is a way to increase your crop yield. Interplanting is also called intercropping.
Interplanting is often used in intensive vegetable gardening where an effort is made to use all available space in the growing area–the counter point to single row planting which requires the most cropping space since the space between rows goes unplanted. (In intensive gardening you can space plants individually equidistance apart or in wide rows–several plants across a row to as much as 4 feet wide.)
There are several ways to interplant your crops. You can grow fast-maturing plants, such as radishes, between slower growing ones, say chard. The radishes will be ready for harvest before the chard begins to mature and requires more space to spread out. This way of interplanting borders on succession cropping–bringing one crop to harvest after another keeping the planting bed productive all season.
You can also interplant crops with different growing habits, tall crops near short ones, or deep-rooted with shallow-rooted. Crops interplanted by growing habit can be set equidistant according to their size (height and breadth or root depth) at maturity; or they can be planted in their own alternate rows in a wide bed.
Interplanting requires planning. You need to know the days to maturity for each crop and its height and breadth at maturity or its root depth at maturity. Do some planning on paper once you have decided on the crops you will be growing this season.
To assist your planning here are two charts that might help: one for plant height at maturity, one for rooting depth (For additional information on vegetable crop root development, see the 1927 book “Root Development of Vegetable Crops” by John Weaver of the University of Nebraska.):
Root Depth
Shallow Rooting (18 to 36 inches)
|
Medium Rooting (36 to 48 inches) |
Deep Rooting (more than 48 inches) |
Broccoli
Beans, snap
Artichokes
Brussels sprouts
Beets
Asparagus
Cabbage
Carrots
Beans, lima
Cauliflower
Chard
Parsnips
Celery
Cucumbers
Pumpkins
Chinese cabbage
Eggplant
Squash, winter
Corn
Peas
Sweet potatoes
Endive
Peppers
Tomatoes
Garlic
Rutabagas
Leeks
Squash, summer
Lettuce
Turnips
Onions
Potatoes
Radishes
Spinach
Plant Height
Tall |
Medium |
Short |
Beans, pole
Anise
Basil
Broccoli
Artichokes
Beets
Corn, sweet
Broccoli
Borage
Fennel
Brussels sprouts
Cabbage
Mustard
Lemon balm
Caraway
Okra
Beans, bush
Carrots
Peas
Broccoli
Cauliflower
Sunchokes
Brussels sprouts
Celery
Tomatoes
Cardoon
Chervil
Chard
Chives
Chinese cabbage
Corn salad
Collards
Dandelion
Coriander
Endive
Cucumber
Garlic
Dill
Kale, dwarf
Eggplant
Kohlrabi
Hyssop
Leeks
Kale, curled
Lettuce
Lavender
Onions
Marjoram
Parsley
Peas, dwarf
Parsnips
Peppers
Radishes
Potatoes
Rutabaga
Pumpkins
Savory
Rhubarb
Thyme
Sage
Turnips
Spinach
Squash
Sweet potatoes