​Plant / Seed Quantity and Spacing for Row Planting

Vegetable

Spacing

Seeds / 10 ft. row

Seeds / 20 ft. row

Beans, Bush
​Beans, Pole
Beets
Bok Choy
Broccoli
Brussel Sprouts
Cabbage
Carrots
​Cauliflower
Celery
Corn
Cucumber (Trellis)
Eggplant
Garlic
Kale
Kohlrabi
Leeks
Lettuce, Head
Lettuce, Leaf
Melons
Okra
Onions
Parsnips
Peas (Trellis)
Peppers
Potatoes
Pumpkins
Radishes
Spinach
Squash Winter
Squash, Zucchini
Swiss Chard
Tomatoes (Trellis)

4 in
​4 in.
4 in
6 in
18 in
18 in
18 in
3 in
​18 in
6 in
6 in
8 in
18 in
4 in
12 in
4 in
4 in
12 in
8 in
24 in (base hill)
12 in
4 in
6 in
3 in
18 in
12 in.
24 in (base hill)
2 in
4 in
24 in (base hill)
24 in (base hill)
6 in
​18 in

60
​60 
60
40
Plants 6
Plants 6
Plants 6
80
Plants 7
40
40
30
Plants 6
Plants 30
20
60
60
20
30
6 seeds /5 hills (30 seeds)
20
60
40
80
Plants 6
10
6 seeds /5 hills (30 seeds)
120
60
6 seeds /5 hills (30 seeds)
6 seeds /5 hills (30 seeds)
40
​Plants 6
​

120
120
120
80
Plants 12
Plants 12
Plants 12
160
Plants 15
80
80
​60
Plants 12
Plants 60
40
120
120
40
60
6 seeds /10 hills (60 seeds)
40
120
80
160
Plants 12
20
6 seeds /10 hills (60 seeds)
240
120
6 seeds /10 hills (60 seeds)
​6 seeds / 10 hills (60 seeds)
80
Plants 12
​

Examples:
60 seeds = 30 holes with 2 seeds per hole
Not all seeds will germinate.  You may have to thin seedlings.
Squash, Pumpkins, Zucchini and Cucumbers (if not trellised) are vining plants and need a lot of space a garden plot.

Thanks Wid for putting this chart together.