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How much soil for a plant,

  • by Guest_jclegg_*
  • Feb 15 2013 01:03 PM
  • 9 Replies
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Posted 15 February 2013 - 01:03 PM

Hi everyone, :hello:
I'm starting to plan my first organic outdoor grow
Saved some recipes for the soil but I'm wondering how much soil do you approximatively use per plant?
I was considering to grow about 10 plants, in a 6 liters pot before planting them in the soil, so 6*10= 60 liters(15.9gals) just for the pots then I was thinking to use the double to add to the native soil, 12l per plant so 15.9+32gals in total for ten plants is it too much? not enough?

thanks for the help :)

Edited by jclegg, 15 February 2013 - 09:48 PM.

Replies (9)

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  • JaniceTheWhite
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Posted 15 February 2013 - 08:20 PM

I used like 80 litres for my plant

  • Guest_jclegg_*
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Posted 15 February 2013 - 09:22 PM

80 litres of your own organic soil for only one plant?
wow I was expecting way less...
or is it 80 with the native soil mixed? if yes of much % of native soil did you add bro?

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  • JaniceTheWhite
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Posted 16 February 2013 - 11:34 PM

I used all bought soil but should have mixed half n half because its way too expensive doing that haha

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Posted 17 February 2013 - 12:34 PM

Yeah that would be so expensive lol
thanks for the answer man,
I'm counting 20/30l of my soil per plant, we'll see how it goes hope it's a realistic estimation

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  • Bird warp
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Posted 17 February 2013 - 09:17 PM

More soil is better,I live in northern canada and grew in 7 gallon grow bags,I used pro mix hp and mixed in worm castings,kelp meal,bone meal,lime,bat guano grow and one shot for veg,had 34 plants got a qp per plant,so IDE recommend 10 or more gallons of soil per plant,it's expensive but u can reuse it for many seasons.the pros use 65 gallon smart pots some go up to 200lol,that's how u get 7 to 10 pounds per plant.

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  • Remo2025
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Posted 17 February 2013 - 09:51 PM

expensive and heavy as hell....
Im shooting for 20 plants 2 cubic ft per plant half super soil mix and native soil.
Roughly 7.5gal each or 28L... this is going to be an extreme challenge to get all my soil in place.
1gal/3.7L of soil weighs about 12lbs/5kilos give or take depending on moisture and density.
Ill have to carrying 15 gal/56L is roughly 168lbs/76kg just for 2 holes.
So far I managed to save up enough for bout 8 holes but I have a long way to go.
Im starting to consider just doing 10... time will tell

my math is just crude estimates im no math teacher

Edited by Remo2025, 17 February 2013 - 10:09 PM.
my math sucks


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  • Bird warp
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Posted 17 February 2013 - 10:36 PM

Outdoor growing is alot of back breaking work,and u get what u put in,u could probably take all ur soil and grow 3 or 4 plants,you will end up with same amout of weed give or take.

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  • PipPipPip
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Posted 19 February 2013 - 01:25 AM

I grow in raised beds. Each bed is 3'x3' and six inches tall. To fill each bed the first year I buy about six bags of Kellogg Patio Plus organic potting soil. I believe they are 1.5 cubic feet bags and cost about $4 a bag. So that would be about nine gallons for around $25.00. I mix a cup of dry fertilizer into the bed about twice a year. I average 2-3 pounds per plant a year. Starting in March and finishing in November.

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  • Mean Creek Grower
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Posted 19 February 2013 - 11:09 PM

Im getting a pallet(62) of fox farm ocean forest and 25 65 gallon smartpots I might get a 100 or 150 gallon not sure tho


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