White widow in trouble +rep for help!

nici said:

My plants are just 2 weeks old...one of them has a purple spot on the bottom of one of her leafs. Also another of the plants first leaves look like they are drying out...
- they are in no nute soil mixed with perlite and vermiculite
- I water when the soil dries out a bit.
- keep them under 400W MH
- gave them root stimulator and plant starter solution 4-10-3 (about 1/4
of the recommended mix) about a week ago
- temp 70 - 80 day, and around 60 night
- humidity 30 - 50%
- water and soil PH 6.5 - 7
What could it be and what could help? Thank you in advance!

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brasmith said:

Do not give me +rep for this because I don't help for popularity.

The problem is the npk of the food you are feeding them. The npk ratio is for flowering plants. Your plants are still vegging and will be for another 3-4 weeks or so. They need vegg food that is higher in nitrogen than it is in p and k. In short they are hungry for nitrogen.

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nici said:

Why stay away from organics? I heard its so much easier cause its almost imposible to over fert. your plants...? Thank you!

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panhead said:

Im going against the grain here,unless the soil your growing in is 100% depleted of nutrients there is no way on earth that a 2 week old plant needs fertilization from exhausting the nutes in the soil,it's highly unlikely those lil suckers need nitrogen,any plant can easily go a month or better without any fertilization as long as the grow medium has nutrients in it.

Imo your trouble lies with what you've allready fed them,at this stage of the game your root system is very fragile as well as the plant itself,if it were me i'd forget about adding nutes until they are a month old,then i would only add nutes after i could see a slight yellowing of the leaves,yelowing of the leaves is a clear indicator that the plant needs nitrogen.

Keep this in mind,it's best when your new to growing to take it slow & do as little as possible to the plants,this includes fertilization,heres an example,its easier to correct a problem caused by malnutrition of a plant caused by lack of nutes than it is to correct problems caused by nute burn or toxic salt build up in the soil ,simply feeding your plants 1/4 strength fertilizer will correct any malnutrtion issues in 2 or 3 days,nute burn or toxic soil is a deadly situation that at the very least will cut yeilds in half,if not kill the plant.

The best thing you can do for your girls when your learning to grow is to do as little as possible,less is better when it comes to weed,take it slow & learn the signs of what nutrients plants need & at what intervals they need them,your better off with no fertilizer through the entire grow then you are over fertilizing.

Lay off the ferts & when you do start feeding them use a simple off the shelf fertilizer,i'd stay away from organic tea's,fish emulshions & expensive hydro shop fertilizers.

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drifter1978 said:

hey mr panhead would you still not give nutes even though he said he was using 100% no nute soil i know you are still going to get something out of it with all the matter in the soil but i had issuses with my seeds at like 2-3 weeks in coco coir though mainly my passion #1 i only ask because i dont uauslly grow by seed but like to try new strains,it started to spread to some other plants and then i relized it was starving can you take a look and tell me what you think please its on the second page

https://www.rollitup.org/grow-journals/122840-multi-strain-grow-journal.html

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panhead said:

there is no such thing as "no nute soil" as far as i know,i took it to mean that the soil he's using has no added fertilizer & no npk rating,all soil has nutrients.

As for comparing coco & soil it's 2 different mediums,there is nothing nutrient wise in coco where as there are all the micro as well as macro nutrients in potting or gardening soil,i can see where plants growing in coco would need nutes after only 2 weeks but not potting soil.

My latest grow is clones in a potting soil mixture & they are at the 5 week mark right now,ive added no nutrients or fertilizers & will not start fertilizing until after i transplant within the next 48 hours,they just started to show signs of a slight yellowing of the feeder leaves yesterday after 5 weeks of life.

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panhead said:

Im going against the grain here,unless the soil your growing in is 100% depleted of nutrients there is no way on earth that a 2 week old plant needs fertilization from exhausting the nutes in the soil,it's highly unlikely those lil suckers need nitrogen,any plant can easily go a month or better without any fertilization as long as the grow medium has nutrients in it.

Imo your trouble lies with what you've allready fed them,at this stage of the game your root system is very fragile as well as the plant itself,if it were me i'd forget about adding nutes until they are a month old,then i would only add nutes after i could see a slight yellowing of the leaves,yelowing of the leaves is a clear indicator that the plant needs nitrogen.

Keep this in mind,it's best when your new to growing to take it slow & do as little as possible to the plants,this includes fertilization,heres an example,its easier to correct a problem caused by malnutrition of a plant caused by lack of nutes than it is to correct problems caused by nute burn or toxic salt build up in the soil ,simply feeding your plants 1/4 strength fertilizer will correct any malnutrtion issues in 2 or 3 days,nute burn or toxic soil is a deadly situation that at the very least will cut yeilds in half,if not kill the plant.

The best thing you can do for your girls when your learning to grow is to do as little as possible,less is better when it comes to weed,take it slow & learn the signs of what nutrients plants need & at what intervals they need them,your better off with no fertilizer through the entire grow then you are over fertilizing.

Lay off the ferts & when you do start feeding them use a simple off the shelf fertilizer,i'd stay away from organic tea's,fish emulshions & expensive hydro shop fertilizers.

Click to expand...