LSF or watering/nutes?

[Herb]

Okay folks, never had this many problems in the rest of my grows combined, especially given how young the plants are.
Again I have an idea what this is but probably wrong!

They are yellowing, particularly on the veins of the plant and mainly on newer growth & has only started happening today.
The plants yesterday went through more than I would of liked, I was away and they were unfortenetly out till 11.30PM with heavy rain (enough to more than saturate the pots) and low temps (11c).

I think it is over watering but perhaps not, if it is - what should I do other than obviously not allowed rain/watering them?
Other suggestions of what it is much appreciated!
Plants are so far growing at a increasingly fast rate as you would expect despite the problems.

Sorry & cheers!


-herb

 

[wg]

Are those the same plant on the same day? One is just digitally enhanced?

That second one looks real bad, that first one just looks like "rapid growth" my plants tend to do that when they're growing fast as well.. while nitrogen is a very mobile nutrient in leaves and soil, calcium is not.. it is somewhat mobile, but it takes time..

I'm assuming you still haven't fed the plants? What's your water pH and runoff pH? It may be time for some CalMag or Epsom Salts. Everything I read on your medium says it's a pretty lightly fertilized mix, with the majority of the fertilizer being humic and fulvic acids.. That pale look makes me think the plant is hungry..

 

[Herb]

Are those the same plant on the same day? One is just digitally enhanced?

That second one looks real bad, that first one just looks like "rapid growth" my plants tend to do that when they're growing fast as well.. while nitrogen is a very mobile nutrient in leaves and soil, calcium is not.. it is somewhat mobile, but it takes time..

I'm assuming you still haven't fed the plants? What's your water pH and runoff pH? It may be time for some CalMag or Epsom Salts. Everything I read on your medium says it's a pretty lightly fertilized mix, with the majority of the fertilizer being humic and fulvic acids.. That pale look makes me think the plant is hungry..

Cheers for that - it is indeed the same plant which was taken today., I don't know what PH is but perhaps someone will know what plant magic soil's PH is like after 15 days on here.
I did click on "one step photo fix" on PSP9 and that does change it a lot, it makes it a lot more clear but also more extreme looking.

In reality the plants look more like image 1 than the one below.

I have not given them anything other than tap water & they got ALOT of rain water yesterday which wasn't great, I wanted to re-pot as well but will as a result of the saturation i'll be leaving it for a while.

They do tend to be more yellow or brighter green but this is different, it is also on seedlings that don't even have the 3 section leaves yet, not as bad but it is there & it has all started today.

 

[Herb]

Just attaching more photos of yellowing & spot issue which by the way..I can see no sign what so ever of insects & I check every night with LED light above and below leaves.

None of these images are edited other than made 70% smaller in size that the originals.

Cheers ganja guru's!



-herb

 

[Bed]

Too much worrying, bro!

Honestly.

I sense panic...and that's an over-reaction.

Plants are living beings---material beings. Like humans, they get their versions of moles, boils, pimples, heat-rash, herpes, etc...

Some humans appear to have flawless skin...but even these people eventually experience pimples and other blemishes...

My point is: Even though some marijuana plants develop no blemishes until near the end of their lives when their leaves turn yellow and drop off, many marijuana plants develop blemishes in the form of spots or yellowing leaves from a very early age---and yet they don't die and they still end up growing until harvest time.

Yellowing is usually caused by too much water...or too much fertilizer. You are using soil that contains fertilizer...I don't know why...A fundamental piece of advice is to not add nutrients until the plants have established themselves---until at least their 4th set of leaves...Using soil with a name like Plant Magic Supreme sounds to me like it contains fertilizer, is that right? Well, even if it is, stop panicking and let the soil dry out and don't add any medicine or oils or sprays or nutrients. When the plant appears thirsty and you know that the soil has mostly dried out, then water it with tap water. Don't feed it any nutrients until a few more sets of leaves have arrived and a healthy colour has returned.

I advise you to get some new soil---some stuff that doesn't have any nutrients or peat in it. I recommend Levington Organic Top Soil. I just bought 4 bags of it yesterday and will use it for my next grow. I advise you to plant some more seeds ASAP in some organic top soil.

The thing about using soil with no "magic" in it, and refraining from using nutrients until at least the 4th set of leaves, is that if any problems do appear, you can rule out nute-burn straightaway. Most problems are caused by nute-burn. It is therefore always best to use LESS than the recommended dose.

Remember, marijuana will grow just fine without any added nutrients/fertilizers whatsoever. The only reason people use them is to INCREASE their yield...but it is risky.

I have never known any soil-based grower (outdoors or indoors) who has refrained from adding fertilizer to ever have had a problem with PH levels.

I have never heard of a marijuana plant failing to produce smokable,stonable buds just because it was never fed any fertilizer.

A little bit of fertilizer may be necessary for indoor plants because they are subjected to more hours of light than they would get from Mother Nature, and so they work harder & longer than their outdoor ancestors did, and therefore may use up the natural nutrients in the soil before they are ready for harvest...but even so, I doubt they would die without any added nutrients.

Bottom line:
Use fert-free soil. Add nutrients after the 4th set of leaves---if you must. Use less than the recommended dose. Don't use nutes with every watering. Error on the side of under-watering rather than over-watering. Don't panic when some leaves get spots or turn yellow.

 

[Herb]

Cheers bed.

I dont over water, never.
No issues in previous grows.

This soil is just retaining moisture way too much & im not sure what I can do about that, it also seems to go compacted.
I normally grow with garden soil and standard compost & that worked well but I did a lot of forum reading and reviews and it was all positive for this soil, even for seedling stage as its meant to be lightly fertilised.
Clearly, this is not the case all the time.

I do have 4 plants that are doing good and pretty uniform, a week older than the seedings you have seen.
I will order some more seeds to start in about a weeks time & will either use that soil you recommended or a normal compost mix.
I have fish mix for nutes for when plants may benefit but haven't used it yet of course.

Never have I had so many issues in a grow and especially for how early on, shall not be using such soil again or at least not until flowering.

I am very concerned and possibly over reacting, I just need to get this grow to be productive as its meds for a whole year ideally..
I only get one shot & that's that, of course I didn't envisage having issues as have never had blemishes or watering/nute issues in any other years.

By the way the yellowing has now ceased & so has any signs of a pest problem. My only issue now is the soils water retention & seemingly the fert.

I am hoping that when I re pot, I will use a mix that will be less in ferts and better drainage - they will be fine then surely.
Just have to get them to that point.

As for the plants that are a week older, they are uniform with less and less blemishes, none now almost that is on new growth & the growth speed is fast with tiny spaces between internodes.

At least now I know not to trust what I read with soils and KNOW what is causing my issues and what I can do to make it better.

I know I have been OTT but these are my herbs and my only source of herb for a year, its pretty critical for someone in my position.
I really benefit endlessly from smoking on many levels so this is why I am so concerned and monitor so much.

Thanks for such in depth responses & help. I know how to grow but when it comes to issues I am no expert as not had them in the past as I said & the symptoms I was getting could have also been other things but I think its safe to say the issue is diagnosed now.


-herb