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what happens??
- Thread starter sbinghi
- Start date
Phosphorus Deficiency
Problem: Phosphorus aids in root growth and overall health of the plant and is especially essential when the plant is in flowering. Cannabis loves phosphorus and it is very unlikely that cannabis gets too much phosphorus. A plant which is deficient in phosphorus will have slow, stunted growth. If there is a major deficiency, the leaves may exhibit dark gray or purplish splotches. The last picture below is an info-graphic with more information about phosphorus and your marijuana plant.
Solution: Check the pH and flush system. An excess of Fe and Zn may cause a phosphorus deficiency. If you've tried everything else, then you may try adding a bit more phosphorus to your feeding schedule and see if that helps clear up the problem. Cannabis plants love phosphorus, and therefore it is unlikely that you will give your cannabis too much phosphorus. I hope this helps, goodluck
Problem: Phosphorus aids in root growth and overall health of the plant and is especially essential when the plant is in flowering. Cannabis loves phosphorus and it is very unlikely that cannabis gets too much phosphorus. A plant which is deficient in phosphorus will have slow, stunted growth. If there is a major deficiency, the leaves may exhibit dark gray or purplish splotches. The last picture below is an info-graphic with more information about phosphorus and your marijuana plant.
Solution: Check the pH and flush system. An excess of Fe and Zn may cause a phosphorus deficiency. If you've tried everything else, then you may try adding a bit more phosphorus to your feeding schedule and see if that helps clear up the problem. Cannabis plants love phosphorus, and therefore it is unlikely that you will give your cannabis too much phosphorus. I hope this helps, goodluck
water them and let 25% of the water run out the bottom, collect some and check the ph of the runoff, I think it's a ph problem, goodluck.
you're runoff should be around 6.5 min.
It is a cal/mag issue. Give them cal/mag 10 ml in a gallon (4L) of water. Then when you water them next time add 5 ml in a gallon.
That being said a slight cal/mag problem should not keep the plants from flower.
If they are clones you don't have your lights on at 12/12.
If they are seedlings then you flipped them before they were sexually mature. Seedlings are sexually mature when they no longer have a set of leaves on each side of the stem at the internode. It is called alternating leaf sets. They will have a leaf on one side of an internode and the next internode will have a leaf on the other side of the stem.
When not sexually mature there will be a set of leaves on each side of every internode.
When you switch immature seedlings to 12/12 it can take 4-6 weeks for flowering to begin. Now it can still happen in 2-3 weeks but more often than not it will take longer. Also seedlings in general take longer to start flowering than clones.
Give them cal/mag because they need some.
You can try turning your light to 11 hours on and 13 hours off to help them get going into flower. Then go back to 12/12 when it starts.
Next time don't flip your seedlings until they have alternating leaves.
Those seedlings actuall look pretty good. They just need a cal/mag boost and more time.
Don't stop and start over. Stay the course.
That being said a slight cal/mag problem should not keep the plants from flower.
If they are clones you don't have your lights on at 12/12.
If they are seedlings then you flipped them before they were sexually mature. Seedlings are sexually mature when they no longer have a set of leaves on each side of the stem at the internode. It is called alternating leaf sets. They will have a leaf on one side of an internode and the next internode will have a leaf on the other side of the stem.
When not sexually mature there will be a set of leaves on each side of every internode.
When you switch immature seedlings to 12/12 it can take 4-6 weeks for flowering to begin. Now it can still happen in 2-3 weeks but more often than not it will take longer. Also seedlings in general take longer to start flowering than clones.
Give them cal/mag because they need some.
You can try turning your light to 11 hours on and 13 hours off to help them get going into flower. Then go back to 12/12 when it starts.
Next time don't flip your seedlings until they have alternating leaves.
Those seedlings actuall look pretty good. They just need a cal/mag boost and more time.
Don't stop and start over. Stay the course.
RO water would only make any calcium def even more pronounced.
OK SB... quit semi freaking out and listen up my friend. I already told you your plants are fine. They look very acceptable. Your main worry was that they would not flower. Your secondary worry, which was only a worry because you thought the deficiency was causing them not to flower. It is not. It is just an everyday, common, cal/mag deficiency that many growers can cure in their sleep.
The poster above your last comment already told you that RO will just make it worse. You should have commented on what they posted. You know, like, "Hey why would RO water make it worse?" Do you know why?
Mostly know you should have made a return comment such as, "I didn't know that seedlings had to be sexually mature or flowering would be delayed" or "I knew about plant sexual maturity".
I am just trying to help you with your internet, ganja forum skills while solving your plant problem. Many posters don't even get involved helping new people because many times they come in, ask a question and never return. Or it takes a huge amount of typing to get them to understand.
I used to always help, then I sporadically started helping. I decided to jump in and help you because for whatever reason I liked your name and question.
So I did answer you 2 questions.
1. Main Question- Why won't my plants flower?
answer- They were not sexually mature
2. Secondary Question- What is deficiency in my plants?
answer- Cal/mag
Now I have to pull teeth for more info. LOL! You told me they were seedlings. Did you look at the leaf sets? Are they alternating or paired?
Since you are still worried about cal/mag and now are worried about ph I will help with ph.
What is the ph of the water you use as it comes from the house tap? If it is 7 or more and still 7 or more after you mix cal/mag leave it alone for now. Just water the plants. It will fix 5.5. Don't start chasing your tail with ph. It doesn't cause problems as much with soil as it does hydro. However, you don't want crazy, stupid ph levels either.
The poster above your last comment already told you that RO will just make it worse. You should have commented on what they posted. You know, like, "Hey why would RO water make it worse?" Do you know why?
Mostly know you should have made a return comment such as, "I didn't know that seedlings had to be sexually mature or flowering would be delayed" or "I knew about plant sexual maturity".
I am just trying to help you with your internet, ganja forum skills while solving your plant problem. Many posters don't even get involved helping new people because many times they come in, ask a question and never return. Or it takes a huge amount of typing to get them to understand.
I used to always help, then I sporadically started helping. I decided to jump in and help you because for whatever reason I liked your name and question.
So I did answer you 2 questions.
1. Main Question- Why won't my plants flower?
answer- They were not sexually mature
2. Secondary Question- What is deficiency in my plants?
answer- Cal/mag
Now I have to pull teeth for more info. LOL! You told me they were seedlings. Did you look at the leaf sets? Are they alternating or paired?
Since you are still worried about cal/mag and now are worried about ph I will help with ph.
What is the ph of the water you use as it comes from the house tap? If it is 7 or more and still 7 or more after you mix cal/mag leave it alone for now. Just water the plants. It will fix 5.5. Don't start chasing your tail with ph. It doesn't cause problems as much with soil as it does hydro. However, you don't want crazy, stupid ph levels either.
S
Sat X RB
I 'm not happy with the idea your plants have a Phosphorous deficiency.
shortage of Ca will cause the spotting ... shortage of Mg will cause the yellowing. these two minerals are co-dependent. google MULDERS CHART and you will see that too much of one mineral will effect the uptake of the other mineral.
if BOTH minerals are in short supply the problem may be with pH.
if you are happy with yr pH as it is then do what Ickis says above. but try just sprinkling Dolomite (which contains both Ca and Mg in the correct proportions) on top of yr soil and water it in. don't put on too much! should just be on the soil like sugar on a donut ...
good luck!
(just a thought, but what are the temperatures where yr growing yr plants? too cold will also produce purple leaves and stunt growth.)
shortage of Ca will cause the spotting ... shortage of Mg will cause the yellowing. these two minerals are co-dependent. google MULDERS CHART and you will see that too much of one mineral will effect the uptake of the other mineral.
if BOTH minerals are in short supply the problem may be with pH.
if you are happy with yr pH as it is then do what Ickis says above. but try just sprinkling Dolomite (which contains both Ca and Mg in the correct proportions) on top of yr soil and water it in. don't put on too much! should just be on the soil like sugar on a donut ...
good luck!
(just a thought, but what are the temperatures where yr growing yr plants? too cold will also produce purple leaves and stunt growth.)
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