water spots on plants turn into white, HELP!

[greenhaus]

so every morning i see these spots of water on all my plants. its not raining its actually pretty sunny and hot.
no sprinklers or any other water source around it.

then this water stuff dries out and looks like white chalk.
it made one of my branches get budrot.

anyone know what this is? how to stop it?

 

[skullznroses]

try praying, if its mold, its hash time for that bush

 

[Sat X RB]

Firstly: I will assume that because you say "... no sprinklers or anything around it" that yr plants are outdoors.

do the branches of any bushes or trees overhang yr plants?

I ask because these spots could be sap from an overhanging plant, insect piss from an overhanging plant, CONDENSATION from the underside of an overhanging plant ...

Secondly: I will assume yr plants are on a verandah or patio or deck with a ceiling.

condensation from the ceiling could be dripping on yr plants. the condensation could be acid or alkaline depending upon what crap is on yr ceiling and might be dissolving into the condensate before it falls.

go to yr plants. LOOK UP. what can you see?

Thirdly: It is unwise to assume these drips are the first-cause of yr mould problem. this may be so, but if you think further ... WHERE IS THE MOISTURE COMING FROM TO CAUSE THESE DRIPS?

if my second assumption above is correct it is very likely that your watering is causing the high humidity environment necessary for condensation to occur. ARE YOU OVERWATERING or causing a high humidity environment in some way? is yr house near water ... like a lake? is it late autumn where you are and sunlight hours are now reduced?
can the breeze get into yr growing area. adequate ventilation during flowering is a MUST!

are you sure you have given yr plants enuf potash? a lack of potash is in many cases the prime cause of mould development.

(sorry I cannot discuss this further because I will be away travelling for two weeks.)

Good Luck!

 

[greenhaus]

the plants are next to my house, not around any trees or bushes. they are next to a fence. and there is a storm drain above but theres no water in it. its bone dry.
my house is in a city, not near any lakes or rivers.

this has been happening almost every day since i planted them in april.

 

[Sat X RB]

thought I 'd have a quick look before I leave ... and "... there is a storm drain above".

if you mean a pipe for carrying rainwater to the ground from the roof, well, condensation can form on such a pipe and drip on yr plants in the morning, perhaps then being scattered around by the morning breeze.

don't know. in a CLEAN city? are the drips acid from car exhausts?

how much sunlight are the plants getting?

bye, bye, travelling in one hour!

 

[greenhaus]

they are in a city of 1.2 million population.
i climbed on my roof and the drains are dry.
its super confusing because ive grown in that same spot last year and there was none of this water that turns into white spots.
i examined it a little closer and some of the bigger white spots have a rainbow color like motor oil. but not much just a hint.

 

[greenhaus]

heres some pics i took an hour ago.
basically all those white spots used to be big drops of clear water.

 

[SeaMaiden]

Can you look at that under a microscope? It's not like any powdery mildew I personally have ever seen, but I see what you're saying. Could it be transpiration-based, I'm wondering..?? Someone here was talking about this effect where droplets can form on the edges of the leaves of plants when VPD hits a certain point, and the next day after I read it (I can't remember the term!) I observed it on some pumpkins. It never caused anything else to happen, though.

What if you just moved the plant? Or can you move it?

I would try spraying with a mix of either isopropyl alcohol:water at a 50:50 ratio, or hydrogen peroxide mixed with water at a rate of 15mls/gal (1 tablespoon). I've actually just sprayed straight 3% H20O2 on my plants, but I'd feel awful if you burned your girl doing that. Then again, maybe you have nothing to lose by trying it, eh?

 

[skullznroses]

lick it, see what it tastes like

have you wiped it off before?

Cover the plants and see if it stops

doesn't look like mold, more like salt or paint... ant piss Lol

 

[BrnCow]

Neighbor whacking off on your bush? lol....

 

[Zdub7k]

are you sure it isnt just dew forming? The pics look like a super intense powdery mildew to me. Myabe try some actinovate, that would take care of any fungul issues....like: mold, PM, root fungus...etc

 

[warthog]

looks like a classic case of PM..

 

[skullznroses]

the top part of the top picture sure does look like a mold spot.

 

[Kcar]

It's bird poop. Don't lick it.

 

[Zdub7k]

sounds like you need some actinovate bro....itll take care of it and its 100% organic, you can use it up to the day of harvest

 

[MajLeeStoned]

It's bird poop. Don't lick it.

You know, I think he/she's right.

Don't lick it, Oh Shit!

 

[greenhaus]

its not PM because PM isnt water. and it sure isnt paint lol although it looks like it is in the pics.
i know its not bird shit lol
i cant move the plants because this is the only spot i have at home to grow outdoor. ive asked 3-4 grower buddies and nobody seems to have ever seen this before.
maybe its a new thing?
i dont have a microscope but im buying one this week to check the trichromes. one of my plants looks near harvest.

can i buy this spray you guys are mentioning at a local store? or is it online only?

 

[Zdub7k]

water causes PM, when the environment is ideal for PM growth...it just starts growing out of nowhere if there any spores drifting by

 

[SeaMaiden]

its not PM because PM isnt water. and it sure isnt paint lol although it looks like it is in the pics.
i know its not bird shit lol
i cant move the plants because this is the only spot i have at home to grow outdoor. ive asked 3-4 grower buddies and nobody seems to have ever seen this before.
maybe its a new thing?
i dont have a microscope but im buying one this week to check the trichromes. one of my plants looks near harvest.

can i buy this spray you guys are mentioning at a local store? or is it online only?

You can buy 3% hydrogen peroxide at any market or drug store. You can buy canola or sunflower (or other light-colored/bodied) oil at any market, too. You can buy soap anywhere as well.

I personally use a microscope to view microscopic things. I use a 10x jeweler's loupe to view trichomes, because anything tighter is too small a field of view. I've tried 15x and 30x and they're too tight for gauging trichomes, IMO.

water causes PM, when the environment is ideal for PM growth...it just starts growing out of nowhere if there any spores drifting by

Water not only does not cause powdery mildew, the spores are killed on contact with water. Many folks ascribe PM to high humidity, and I've seen it occur in low humidity and high heat (cucurbits, late August). It's as much to do with overall plant health as anything else, IMO. There are definitely always spores in the air.

 

[standsideways]

Water not only does not cause powdery mildew, the spores are killed on contact with water. Many folks ascribe PM to high humidity, and I've seen it occur in low humidity and high heat (cucurbits, late August). It's as much to do with overall plant health as anything else, IMO. There are definitely always spores in the air.

You confused?

It is in the warm and dry climate that the spores can cover so much ground.....Like the POLLEN of a plant..sound familiar? Thats why you are associating dry with mold/mildew.


The cucurbits are known to be weak to the DOWNEY MILDEW, wich, is NOT
The same as POWDERY MILDEW.

And You HAVE TO HAVE moisture to GROW THE MILDEW/MOLD.

you should know this, it may help save your purty gardens one day!