Burning tips even though I have been very careful with nutrients?

[LoveGrowingIt]

Good. Salts do have their place but it’s not here.

I used Epsom salts throughout the grow, till a few weeks before harvest.

 

[LoveGrowingIt]

What type of nutrients is the OP using?

 

[TheGoldenRoad]

I used Epsom salts throughout the grow, till a few weeks before harvest.

I just read that and let me clarify, epsom salts are very useful in cannabis cultivation but not to this specific issue.

 

[TheGoldenRoad]

What type of nutrients is the OP using?

Canna Terra Flores

 

[LoveGrowingIt]

Canna Terra Flores

Okay. Thanks. I'm not familiar with that one.

 

[LoveGrowingIt]

Salts aren't an issue for us organic growers.

 

[TheGoldenRoad]

Okay. Thanks. I'm not familiar with that one.

I’m not either. I run Greenleaf.

 

[Grownsince95]

Burnt tips are for barbecue joints

 

[Markyb]

What type of nutrients is the OP using?

I'm using Canna Terra Flores.

 

[TheGreenTroll]

mild tip burn is nothing to worry about, In this pic look at the margins (serrated edges) are pointed up- this indicates shes getting a little too hot, her color is light green indicating a mild lack of nitrogen,(shes moving nitrogen now from her bottom leaves) she needs a little more, not too much as she's in flower so dont jump the fence, you said "the Plant is 56 days old" so Im assuming shes an Auto flower, so she'll probably go 80+ days, although Ive had them go a 100+ days...she's in pretty good shape, with a few correctable issues.

Your EC seems a little low, Auto's are light feeders, but my autos in flower are around 600-700ppm (Ec 1.2-1.4) so I would raise your Light height or lower power (76-78 degrees at the canopy) and raise your feed incrementally, try 400ppm/.8ec to start with.( if they're ok with that 8-10 days maybe a little more?)

Remember as a cultivator, Leaf "Color & Silhouette", is our Plants talking to Us, after a few grows your eyes will learn to see even the slightest changes in "shades of green". Color tells Us how to mix our next feed. Her leaf silhouette looks fine other than the margins as noted...

and Yes you need your fan leaves especially nearest the fruits.

Right On!

I personally disagree with the fan leaf theory, black dog LED go into it with more detail

 

[phxazcraig]

For the first time (in 5 grows), I'm getting far less tip burn than I have ever had before. (Almost none this year). I'm doing about the same thing as I've done before, particularly with nutrients. I'm using the same (average) GH feeding schedule I always use, but now I have less tip burn.

I think it is because I've increased my humidity levels a bit and also reduced grow tent temps a bit. I managed the humidity with a humidifier, and I reduced my grow tent temps by increasing the distance from my light to my plants. The temp sensor is at the top of the plants. I used to have my 600w grow light about 2 feet from the tops, or less, but now I've got it set to max power and raised the height until the plants have the proper PPFD. I measure PPFD with a meter. I used to keep the light closer and turn down the power, which resulted in same power level, but higher temperatures at the plants.

I'm thinking that I had been a) making the plants too hot by having the light too close, and b) I did not have the humidity up high enough for the temps. My theory is that I made the plants suck up too much water trying to protect themselves against the heat and the lighting, causing too much nutrient uptake and tip burning.

Or it might be I have better genetics in this year's grow.

I like my simple theory that if I get tip burn, I may need to up the RH a bit to slow the plant respiration. Just an indication that VPD is important.

 

[bookstrap]

I think the most common problem I'm going to cite revolves around miracle grow and the likes... if you're adding nutrients to something that is designed to feed the plant for 6 months or so... you're going to likely overfeed it with one thing or another...

if you're using miracle grow... try to cover the soil with something so it doesn't evaporate so fast... don't overwater... you don't want activate to many of the nutrients... We're using lights and rooms here unlike anything you can find in the ag industry really... I mean.. the extent we go to perfect and get the most out of these plants is pretty unfounded... and i think most people are shooting for a magazine cover plant with vague information from such peoples, and not knowing the extremes they're really pushing the plants...... when even modest grows can produce 50- 70- and 80% of what you're shooting for and ruining

though.. some things... the plant just needs...
things to consider:

-soil choice- how you feed it
-humidity- is your plant trying to get to much water from the soil... and in turn nutrients?
-is your soil drying out extremely fast- maybe turn your lights down to 25% and mist once a day
-i havn't tried it with photo plants... but i recently started turning my main light down to 25% for an hour at night and in the morning- with my two aux lamps producing all blue and white- it can be extremely beneficial to plants... you know that.. blue cloudy sky with the wind blowing back and forth... with thick plump green leaves kinda weather.
-are you giving them to much light?
/ morning dew from time to time and day to day
-plants can absorb water through their leaves... you can do this to make you plants use less water from the soil... humidity is important... sometimes u can add sugar/glucose to your misting water... but just b4 they dry ,,,, just before theyyy're dry... mist the hell out of em again dripping wet.. you want it to breathe and not be covered in sticky sugar....sugar will still be there.. just in all the right nooks and crannies...
i have dawn power wash ... cleaned out... can't beat it.

-are you giving them to much light?

It seems counterintuitive to give them more nutrients.. if they're experiencing nutrient burn... but the glucose will overload the capacity of glucose being able to be moved... it's not really a nutrient per say... and the plant will focus more on the roots... which as you can see in hydroponics... a thing the nutrients don't give problems to....mind your ph after mists...
turning your lights down will help your plants absorb the water ... as they percolate... and it will also prevent spot burns from bubbles

the plant below is from a hydroponic test mind you.... and it's nearing a full recovery... it's in fact a few inches taller then the average plant height reporting for its age... maybe i'll show u it next month

Being able to make your plant perc up and down is where you should look to be.. from an outside perspective.. ~considering growing cannabis as a hobby... brighten up the shop if it's legal where you are... put your tent in a habitable area and ... open up the doors... (mind pests such with this and that) don't look at it as a chore down in the basement....it's not just a practice.. it's a way of life... I grew completely flawless plants with just my window and miracle grow out in AZ...

I've done a bit of this and that... but i'm upping my game to hydro

(the new leaves coming in that are yellow... i think will really appreciate some periods with less intensity... i have baby yellow leaves to incubate daily with this auto ... it's pretty fun) growing so fast...

Another note... don't trim until you're certain the leaf will die... you don't know what's going to come up where... and a lot of people butcher plants... unknowingly leaving themselves with significantly poorer yields

you can usually wait until flowering to pluck at it here and there...
cultivar... that's for light distribution.. leaves that can't take care of themselves.. or diminishing yeilds... you can literally cut a small cola developing late to produce more elsewhere....etc... cutting off leaves doesn't solve the problem .. and should be looked at as a last resort... if anything.. you're likely just making the problem move to another part of the plant... you can nurse leaves. and watch the problem get better and worse.. right where it is.. right there... and it doesn't have to promulgate on another leaf or patch

trimming to much can make your roots try to overstimulate your plant to.... for which it is~glucose~ and once your roots on the run.. if you did trim to much...... ~it's glucose~ glucose glucose

and that seems counterintuitive... as I said that glucose will block the roots from overstimulating the leaves... anyway.. tables turn... and the plants know how to recover.. they just need the proper time.. and stimulation sometimes
and this-- https://www.growweedeasy.com/why-are-leaf-tips-brown-burnt-or-yellow

 

[bookstrap]

bigger space and auxiliary lamps friend.. throw some light in from the sides and and turn your top light down a bit... no scissors

 

[bookstrap]

Another off the wall tip... don't give your plants caffeine... it's a natural allopathic and inhibits competitive plants seeking nutrients and water... ig cannabis...it can kill your plants... that's for anyone trying to use coffee for nitrogen and such

 

[bookstrap]

Should I Mist My Buds? (Pros & Cons) - WeedMania420

Misting buds is one of the most contentious issues in cannabis growing circles. While others swear by its effectiveness, others warn of the risks it poses to your buds.

weedmania420.com

 

[RGWD0202]

Thanks!
There's not much nutrients left in the soil, its Biobizz Lightmix which is meant mostly for growing seedlings I think. It was recommended by many growers because its not too hot to begin with.

I have been watering by weight. I measured the pot when I filled with the soil, and I water her when it gets close to that dry weight. So far I think she has not been overwatered once, at least she has not shown any overwatering symptoms.

Dry backs can cause tip burn. When there is a small amount of water left in the container it can have higher concentrations of nutrients than when you have more water causing tip burn. It’s not a big deal and shouldn’t cause any issues with your grow. You have every bit of 4-5 weeks to go just continue doing what you’ve been doing.

 

[RGWD0202]

I used Epsom salts throughout the grow, till a few weeks before harvest.

I use them to correct magnesium deficiencies. Why wouldn’t you add magnesium to correct a magnesium deficiency?

 

[VitaMan]

Heat stress and light stress both cause the plant to take in excess nutrients causing burnt tips. I don't see any other signs of these.

Fan leafs are a contentious issue among growers with lots of opposing opinions.

During flower, I only remove fan leafs if they are shading bud sites, get no light or dying.

I can see there is inner and lower foliage that gets no light and some that are yellow. I would remove those as they take more energy than they produce.

Happy growing

 

[bookstrap]

How u doing? No burnt tips here in my hydroponic grow

 

[RootFarmer]

NPK doesn't burn plants. Magnesium will. Manganese will. Boron will. You fix those problems by adding every other nutrient to match the over abundant nute.


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Almost everything pot growers believe is backwards. Nute burn should be viewed as a deficiency, always. Unless your pH is low or you add Epsom salts because some asshole on the internet decided to fuck with you.

I was thinking possible K deficiency at first glance, given the burnt tips. Striking the right balance is just as important as quantity, I think.