Pot sizes for peppers, in gallons

I'm planning to grow 12 pepper plants in a greenhouse, and move them indoors when winter comes. So I need to have them in pots. From research I have found that the ideal pot size is 12'. There are no garden centers near where I live, but I was able to find a website that sells nursery pots. My problem is the sizes are listed in gallons.

Does anyone know what size of pots I should use (in gallons)?

The species of pepper are: 1x Habanero, 2x Cayenne, 3x Jalapeño, 3x Pasilla, 3x Guajillo

 

Is that 12 in. in height or across the top?

 

Masket, Pot size in inches is really not a very good indication of soil mass. the depth of the pot and the taper of the sides makes a huge difference on the mass of soil in the pot. That said, I would plant them in a 4 gallon pot, myself. This will use a huge quantity of potting mix to get them all planted, though. So if you can find the potting mix in bales it would be much more economical. Also toss in a diaper in the bottom of the pot or mix in the soil moist crystals to help hold the moisture when it starts to get really hot. Hope this helps you a little.

 

I don't actually know if its inches across the top or in height, and I've heard that using inches to measure is sort of a gimmick. 4 Gallons is very helpful, I may go a bit smaller, since I need to be able to move them around in-doors easily. I also have access to large amounts of free compost so this should make filling them easier. Thanks for the help!

 

A 12 in tall pot in the nursery generally holds about a gallon of potting soil or a bit over. Thats right at least 3 1/2 to 4 gallon pot size is what you need for peppers. But you really don`t have to use regular pots unless you want them to be visually pretty. Go to your dollar store and buy small trash cans or buckets and drill holes in the bottom. Works as well if not better and inexpensive.

 

I have been using the 5 gallon buckets from the big box stores. They are $2.49 each and will probably last forever. Drill some holes around the bottom perimeter and add some rock for good drainage.

I share this because I mainly grow peppers in them and they do a good job. There is enough soil to maintain moisture near the bottom while I tend to starve them a bit. I think the size of the bucket allows some room for error where as a smaller size would open them up to dying off if too dry.