I have access to an almost unlimited supply of coffee grounds and can't help wonder if it could somehow be put to good use growing weed. I've read lots of anecdotal articles about how great it is as an amendment as well as some scientifically back articles about how you should avoid it unless you can fully decaffeinate it (caffeine, it seems, evolved as a natural herbicide to block competing plants). Coco bricks ain't particularly cheap though and coffee grounds are on the acidic side which is good for where I live where everything is high pH. Anybody actually try using it as a main component?
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Coffee grounds as a medium. Anyone try it?
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Coffee grounds as a medium. Anyone try it?
5x7 closet with reflective mylar on the walls
2 UF-4000 LEDs (set to 25K Lumens at the plant)
150 CFM bathroom vent installed in ceiling exhausting through a roof vent
Elitech STC-1000Wifi Temp&Humidity Controller
1X Sundae Driver in 35g grow bag
2X Orange Velvet in 35g grow bagsTags: None
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True if properly composted coffee grounds have good things in them, however they also contain caffeine and that is an herbicide. Herbicides hill plants, so the caffeine must be fully washed out to not harm the roots. Maybe if you got decaffeinated it would be ok, IDK, I toss them in the compost. Good luck!
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I compost all of mine. Do an experiment. Thoroughly flush enough to fill a planter, add lime and perlite, plant a seed and see what happens. Should be a good base providing the caffeine is gone.keeping it green with the soil thing
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Originally posted by Going2fast View PostI compost all of mine. Do an experiment. Thoroughly flush enough to fill a planter, add lime and perlite, plant a seed and see what happens. Should be a good base providing the caffeine is gone.I hope there is an afterlife...there are a lot of friends and family I'd like to see again, one day.
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I am not prepared right now to try a more ambitious test using the coffee as the primary media but I did have two OrangeVelvet clones ready to pot so I decided to try a safer test (I don't want to lose either plant). Both pots have a 4:1 mix of Whitney Farms Organic Potting Soil and Pearlite. The plant in the white pot has coffee grounds added (4:1:1 ratio WFO:Pearlite:Coffee). I also mixed in 1 tsp mycorrizal fungi to both. Will post more pics in a week or so. pH of runoff is 5.98 (wo) and 5.90 (w).
5x7 closet with reflective mylar on the walls
2 UF-4000 LEDs (set to 25K Lumens at the plant)
150 CFM bathroom vent installed in ceiling exhausting through a roof vent
Elitech STC-1000Wifi Temp&Humidity Controller
1X Sundae Driver in 35g grow bag
2X Orange Velvet in 35g grow bags
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Did you add anything for a PH up buffer? Looks to me like the PH is crashing. (and maybe a tad hot)
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I just now flushed it with 2 gal. water (~5X the container volume). Initial runoff pH was 6.35 and it climbed to 6.8 by the end of the flush. Temperature is maintained between 60 and 75 in the box although I do see twice in the last week it spiked to 80 but only briefly. Humidity has varied between 30 and 60% over the same 7 days.
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One of these things is not like the others; one of these things is kinda the same. Four months later the Orange Velvet that got the coffee grounds is still struggling...
5x7 closet with reflective mylar on the walls
2 UF-4000 LEDs (set to 25K Lumens at the plant)
150 CFM bathroom vent installed in ceiling exhausting through a roof vent
Elitech STC-1000Wifi Temp&Humidity Controller
1X Sundae Driver in 35g grow bag
2X Orange Velvet in 35g grow bags
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I had heard somewhere that caffeine will stunt the plant growth. I guess that's true.
But some interesting facts.
Caffeine might be said to make the world go round, as many of us rely on its stimulating benefits. It has intrigued scientists, leading to recent studies regarding caffeine use in gardens. What have they discovered? Find out here.
Will Caffeine Affect Plant Growth?
What purpose does caffeine serve, other than to keep us awake? In coffee plants, the caffeine building enzymes are members of N-methyltransferases, which are found in all plants and build a variety of compounds. In the case of caffeine, the N-methyltranferase gene mutated, creating a biological weapon. For instance, when coffee leaves drop, they contaminate the soil with caffeine, which curtails germination of other plants, lessening competition. Obviously, that means too much caffeine can have a detrimental effect on plant growth. Caffeine, a chemical stimulant, increases the biological processes in not only humans but plants as well. These processes include the ability to photosynthesize and absorb water and nutrients from the soil. It also decreases the pH levels in the soil. This increase in acidity can be toxic to some plants, although others, like blueberries, enjoy it.
Read more at Gardening Know How: Will Caffeine Affect Plant Growth – Tips On Fertilizing Plants With Caffeine
https://www.gardeningknowhow.com/gar...ant-growth.htm
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That sucks guess it's another dang lesson, put some worm castings on it top feed, but I'd flush with Epsom salt first. Nice looking setup clickSmoke Ganja create Peace Respect Nature don't trash the Planet
Soil grower with coco/perlite mixed in
indoor/outdoor grower
1 36"x36"x66" tent- Viparspectra P2500
1 3x3x6 tent- used in late spring for seedlings both veggies & weed. I have 2 viparspectar 450r for that tent.
I use a t-5 & 54watt CFL for seedlings
Sometimes i use plastic sometimes i use fabric grow containers
Currently using fish/guano during veg growth & FF Grow Big 6-4-4 teens to bloom. Once i see pre-flower i switch to
Age Old Organics Bloom 5-10-5
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