How many times have you wondered about the amount of potting soil you need to fill a flower pot or how many seeds you can start with one bag of soil?
Here at Geo Growers our Thunderhead Potting Soil comes in a 16 quart bag and a 20 gallon bag. It should be no mystery as to how much you need when it is time to repot existing plants or get your seeds started.
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It will be easiest to start small and work up to medium and large volume pots.
Here at Geo Growers we highly recommend our Thunderhead Cactus & Succulent Mix for all of your seed starting needs. 3.5 and 4 inch pots are probably the most common for seed starting.
|Pot Size||16 Quart Bag||20 Gallon bag|
|3.5 inch pot||~76||~380|
|4 inch pot||~33||~165|
If you are not interested in seed starting, but want to re-pot an existing plant, here are some standard medium size pots. Thunderhead Original Potting Mix is great for re-potting a wide variety of houseplants and vegetable.
|Pot Size||16 quart bag||20 gallon bag|
|6 inch pot||~13||~63|
|8 inch pot||~5||~26|
|10 inch pot||~3||~16|
|12 inch pot||~1||~6|
So a quick look tells you that a 16 quart bag of Thunderhead Potting Soil will fill
Larger pots are a bit easier to figure out since they are not fractions of a quart, but this should help as well.
|8 inch pot||3 quarts|
|10 inch pot||5 quarts|
|12 inch pot||12 quarts|
|14 inch pot||18 quarts|
|16 inch pot||22 quarts|
|20 inch pot||28 quarts|
|24 inch pot||36 quarts|
For larger volumes it is good to know that 1 US quart = 0.033420139 cubic foot. That should help you figure out how much potting soil you may need for larger planters or pots.
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The examples above are “typical” pot volumes, and some designs may vary considerably.