One of the first
thing, while starting container gardening started bothering me is what should
be the size of the containers for each vegetable. What I found from different
resources and self experience is .. Three things matter. One is volume of the media and second is
depth of the container. Some plants do
have deep roots and don't do well in shallow pots even if the volume is good.
So when I will write about the container I will write about the required volume
and depth . Yet again, The volume required is really a relative thing. I used much
smaller volume than required for some plants, they grew less, but fruits early.
Positive stress, they are called. In other words, what I mean to say , if you
find a container that is little smaller or, bigger than the prescribed volume, you can safely go
for that.
Another important and the third aspect one should not ignore
is spacing of the plants. Overcrowding affects the health of the plants, more
diseases, less growth and less crops. Don't be greedy, as I was! Maintain the recommended spacing . Below is a chart , which I gathered from the net plus own
experience.
Vegetable
|
Suggested Minimum Pot Size
|
Spacing between plants
|
Beans, green
|
9-15 liters; 8-12 inches deep
|
2-3 inches (provide supports)
|
Beans, lima
|
9-15 liters; 8-12 inches deep
|
2-3 inches (provide supports)
|
Beets
|
1.5 to 9 liters; 8-12 inches deep
|
2-3 inches
|
Broccoli
|
12-15 liters
|
1 plant per container
|
Brussels Sprout
|
12-15 liters
|
1 plant per container
|
Cabbage
|
12-15 liters; 8-12 inches deep
|
12-18 inches between heads
|
Carrots
|
1 liters to 3 liters; 8-12 inches deep
|
2-3 inches
|
Chard, Swiss
|
1.5 liters; 8-12 inches
deep
|
4-6 inches
|
Collards
|
12 inches deep
|
4-6 inches
|
Corn
|
21 inches wide, 12-14 inches deep
|
2-3 plants per container, 6 inches apart
|
Cucumbers
|
12-15 liters; 3-9 litres (dwarf)
|
14-18 inches (provide supports)
|
Eggplant
|
9-15 liters
|
1 plant per container
|
Horseradish
|
15 liters; 24-30 inches deep
|
1 plant per container
|
Kale
|
9-15 liters; 8 inches wide X 8 inches deep
|
4-6 inches
|
Leaf Lettuce
|
1 -9 liters; 4-6 inches deep
|
4-6 inches
|
Mustard Greens
|
9-15 liters; 8 inches wide X 8 inches deep
|
4-6 inches
|
Onions, green
|
1litre to 9 liters
|
2-3 inches
|
Onions, yellow/sweet
|
15 liters
|
3-5 per container
|
Peas
|
12-15 liters; 12 inches deep
|
3-4 inches (provide supports)
|
Peppers
|
9-15 liters
|
1 plant per container
|
Potatoes
|
3-60 liters
|
space plants 6" apart
|
Pumpkins
|
12 inches deep, 4 foot wide
|
1 plant per container
|
Radishes
|
3-15 liters; 4-6 inches deep
|
2-3 inches
|
Spinach
|
9-15 liters; 8 inches wide X 8 inches deep
|
4-6 inches
|
Squash, summer
|
6-12 liters; 24 inches deep
|
1-3 plants per container
|
Squash, winter
|
9-15 liters; 24 inches deep
|
1 plant per container
|
Tomatoes, full-sized
|
12-15 liters
|
1 plant per container (support)
|
Tomatoes, cherry
|
5-15 liters
|
1 plant per container (support)
|
Turnips
|
1 to 9 liters; 10-12 inches deep
|
3-4 inches
|

