twateater1020
Active Member
are coffee grounds good for mj plants?
coffee grounds
- Thread starter twateater1020
- Start date
dank smoker420
Well-Known Member
yeah used coffee grounds give the plant N. unused grounds are too acidic
Vindicated
Well-Known Member
I wouldn't rely on coffee grounds for nitrogen, but as a free mulch they're pretty good. They help hold moisture and keep the top one inch of soil from getting to hot in the summer. Best of all you can go to any Starbucks and ask for spent coffee grounds. They give them away free to anyone who needs them for their garden.
Kaendar
Well-Known Member
Tests have proven that grounds do provide alot of N.
Nice Ol Bud
Well-Known Member
Only as it degrades..
A lab test shows that coffee grinds provide a generous amount of phosphorus,
potassium, magnesium, and copper. They also release nitrogen into the soil as
it degrades throughout the year.
A lab test shows that coffee grinds provide a generous amount of phosphorus,
potassium, magnesium, and copper. They also release nitrogen into the soil as
it degrades throughout the year.
Nice Ol Bud
Well-Known Member
Sorry but not at all.
Nice Ol Bud
Well-Known Member
Just letting you know so you know. 
Not being a douche bag
Not being a douche bag
BigJon
Well-Known Member
Any idea how long it takes to degrade? Do you grow with coffee grounds? Starbucks has them for free and I'm going to have to amend my soil. I think my kale greens are reaching the end of their life (I've harvested 3 times already) and I am going to re fresh the soil in their spots before mid summer for my Fall veggies.
Nice Ol Bud
Well-Known Member
Its couple of months.
Has to sooth itself into the soil first, then the micro organism's have to break it down.
Don't know the full process just yet.
BigJon
Well-Known Member
What do you mean by throw em in? Just mix it into the medium or topdress it?
dank smoker420
Well-Known Member
ive mixed it in to the top layer of my soil before and then watered. deff gave alot of N my plants were dark green
bigblockhead
Active Member
My limited net research shows equal N, P K. I checked because I actively use a compost bin at home. I roast coffee as a hobby, so I wanted to see what coffee grounds provide in the compost pile. It's just neutral. Good compost along with all my other organics. Happy growing.
