Plant Spacing and Thinning:
At first I go by what the seed instructions says and then I go my own experience.
If you live in a dry climate, plants roots have to search farther for water and will benefit from wider spacing than the seed instructions suggests.
I grow in raised beds so I could plant my crops closer together, but I still have very heavy clay soil.
When it's time to thin seedlings I use a scissors and clip them off so I won't be disturbing the other seedlings.
Or I just wait until it rains or my soil is moist and just gently lift the thinning's and use them somewhere else in the garden.
For measuring between plants - I just or use my body.
My foot is a foot - in really life I don't know what it is - shoe size is 8.
My hand from my baby finger to my thumb is 6" - It's actually 7.5".
From my elbow to my middle finger - it's 18".
From my middle finger - turn head and measure to side of nose --- it's a yard.
It's gardening - it's close enough.
First you go by the book and then you do your thing. It works! :)
Or you can use a board - notch the sizes you use the most often and use the board for spacing.
Raised Beds are easy to pencil mark the side of the bed every 12". I still use my hand for spacing. :)
I also look at my seeds like carrots or onions - and leave enough room for the carrot to grow to the size I want.
As with conventional spacing your experience are the best guidelines, but I am posting a a guideline for you below. I hope it helps.
Vegetable Plant Spacing Chart
|Vegetable||Vegetable Plant Spacing|
|Beans||4 - 9"|
|Beets||2 - 6"|
|Brocolli||15 - 18"|
|Brussels Sprouts||15 - 18"|
|Cabbage||15 - 18"|
|Carrots||2 - 3"|
|Cauliflower||15 - 18"|
|Chinese Cabbage||10 - 12"|
|Collards||12 - 15"|
|Cucumbers||18 - 36"|
|Eggplant||18 - 24"|
|Kale||15 - 18"|
|Leeks||2 - 6"|
|Lettuce||6 - 9"|
|Melons||24 - 36"|
|Okra||12 - 18"|
|Onions - bulb type||4 - 6"|
|Onions, Bunching||2 - 3"|
|Parsley||4 - 6"|
|Peas||2 - 6"|
|Peppers||12 - 15"|
|Potatoes||10 - 12"|
|Pumpkins||24 - 36"|
|Radishes||2 - 3"|
|Spinach||4 - 6"|
|Squash||24 - 36"|
|Sweet Potatoes||10 - 12"|
|Swiss Chard||18 - 24"|
|Tomatoes||18 - 24"|
|Turnips||4 - 6"|
|Zucchini||6 - 8"|