using left over growing medium

chiefbeaz
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using left over growing medium

#1

Post: # 12836Unread post chiefbeaz
Wed Mar 04, 2020 10:44 am

I have about 3/4 of a bale of Pro Mix BX left over from last year. Would this be ok to use to transplant seedlings in or should I buy a new bag? I know that you should use fresh seed starting mix for sowing seeds, but is it the same for transplants after the seedlings get big enough to transplant? What are your thoughts ?
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pondgardner
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Re: using left over growing medium

#2

Post: # 12838Unread post pondgardner
Wed Mar 04, 2020 10:51 am

I would use the Pro Mix you have, possibly adding some fresh mycorrhizae inoculant. I have used mix from previous years with good results.
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MissS
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Re: using left over growing medium

#3

Post: # 12853Unread post MissS
Wed Mar 04, 2020 1:09 pm

I use leftover Pro Mix to plant seedlings up all the time without any issues. As long as you have kept it in a place where it is dry, then you should be just fine. If it was stored outside where it gets wet then I might worry about it a little more. I always add more myco's even when using brand new product.
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chiefbeaz
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Re: using left over growing medium

#4

Post: # 12859Unread post chiefbeaz
Wed Mar 04, 2020 2:28 pm

Thanks for the reply. The Pro Mix was in my green house,so it stayed dry. I see no reason why your couldn't use it ,but i wanted some opinions.
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kath
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Re: using left over growing medium

#5

Post: # 12860Unread post kath
Wed Mar 04, 2020 2:30 pm

Sometimes it takes me 3 years to go through a bale and I've noticed any difference. The bale lives in our basement.
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Gardadore
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Re: using left over growing medium

#6

Post: # 12876Unread post Gardadore
Wed Mar 04, 2020 3:39 pm

My bag is closed and in an outside shed. I have no problem reusing it. For seed starting I add more perlite. Like the idea of adding more myco at transplanting.
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KarenO
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Re: using left over growing medium

#7

Post: # 12908Unread post KarenO
Wed Mar 04, 2020 11:09 pm

If it has been outdoors don’t bring it into your house because it is Highly likely to have insect eggs in it. (Fungus gnats at the least )
You can use it outdoors but buy a new bag for indoors.
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Labradors
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Re: using left over growing medium

#8

Post: # 13027Unread post Labradors
Fri Mar 06, 2020 8:15 am

I always have leftovers and use them successfully, except one year when I used some to start seedlings, not noticing at first that a piece of pink insulation from my basement had been put in there. I suspected a mouse nest - and droppings! Not good for seedlings, but it was fine to use for potting up :).

Linda
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brownrexx
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Re: using left over growing medium

#9

Post: # 13031Unread post brownrexx
Fri Mar 06, 2020 8:46 am

Put a Mosquito Dunk in your watering can if you see fungus gnats.
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