Autoflower leaves droop / curl dramatically

Every few days, it starts during the night, and takes a day or 2 to recover.

Growing in soil, (local veggi soil, organic w/ compost) + perlite + handful of sand + slow release CalMag + mycorrhizae).
Soil label says PH 6-6.5

I water every 3-4 days with Biobizz fish mix in dehumidifier water (UV purified) PH ~6.8 - when the top 3-4cm are dry (but not sure about the bottom)

Temp: 19-25C
RH: 55-60%

Mimosa Auto - 27d
Apple fritter Auto - 27d
Royal Kush Auto - 20d
Orion F1 Auto - 23d

I’m assuming it’s overwatering. But it happens to all of them at the same time.

5 Likes

Your pH may be off.

6.4-6.5 for soil.

Soil looks soaked.

Also, are you letting the soil dry before watering? If not, you are probably over watering.

Check for time for watering by the weight of the pot and if the plants look like they need it.

Welcome to the community @301heat!

5 Likes

Thanks @Growmoredank

This is my first indoor grow. I’ve done outdoor with relatively good results.

I watered them today. After they showed this wilt.
It had been 4 days since last watering, and I water when the top is dry.

The soil looks drenched because I watered them generously today as I was watering around 500ml to 750ml per plant before (3gal fabric pots filled 3/4), and thought after 4 days and this wilt, they might be underwatered and needed to get some runoff…

You’re right about the pots… They don’t seem to be as light as im used to them outdoors. Seems I misjudged. I hope I didn’t screw this batch…

4 Likes

Seem recoverable.

You found a great place for help or info!

3 Likes

Be very careful. Autoflowers are unforgiving at this age. A couple of them already look a bit stunned.

3 Likes

The 2 at the front are younger, and all of them have been LST’d a week ago

1 Like

They look hungry Grow Bro, growing in organic you should keep the soil moist and not let it dry, this will kill the microbial life. What organic nutrients are you using to top dress and what microbes are you using. Growers recharge or TPS Billions are 2 that I would recommend. That organic medium should buffer the PH and not need adjusting :love_you_gesture:

5 Likes

Welcome aboard. How much perlite? If not enough the bottom and middle can turn to mud and suffocate them. I do living soil also. Dry till almost arid. Add more life and water slowly to moist. Just what I would do. Thats some ugly wilt. Hope they pop back.

3 Likes

Unfortunately on my side of the planet, we don’t get much choice or availability for nutes and so on.
I was able to order Biobizz online. I use the fish-mix (5-1-4) with every watering.

I mix 2-3ml per litre. I use my dehumidifier water - it’s UVC treated, after HEPA filter. And it’s not in a nasty attic or smthn. My tap water is +7.6 PH.
Each plant takes ~700ml (I might up that amount and do a longer dry-wet cycle)

When planting I mixed soil (veggi potting soil with compost) + perlite (20-30%) + cup of sand. I amended the soil with CalMag (slow release), mycorrhizae in the seed hole, and first watering was done with effective microorganisms. The soil has never gottem bone dry yet.

I also have a micro-elements mix (copper, sulfur, boron, maganese, etc…) that I sometimes use for other veggies if soil needs it.

They perked back up today. 24h later.

This is mind boggling for me, as they only wilted 4 days after watering, and perked back 24h after I watered them.

3 Likes

I put around 20-30% perlite.

They recovered today. This happened a few times with this grow.

They don’t get bone dry…

I’m starting to think they suffocate from wet soil around the roots after a few days, and then at the new watering they are getting fresh oxygen/feed from the new water?

Yesterday I drenched the soil after thinking it was underwatering.

2 Likes

I wouldnt recommend fish mix for autos personally. Way too potent

1 Like

100% overwatering also. Im guilty of this all the time with autos i hate them personally but thehre convenient. I have a few going now and all have some kind of issie in their own way. I never have issues with photoperiods so im naibky doing them. My opinion honestly wouod he change nutrients to a dry amendment like greenhouse bio feeding. If yoire europe can get it from camgrows. Or ebay. Its unbelievably easy to use and near enough impossible to over feed.

2 Likes

Im mainly … my typing is terrible on this phone :rofl:

1 Like

Using living soil I never drench. i focus on strong life and water to moist. This whole grow right now I just maybe drop a gallon every few days big pots. Never dry out but never soaked. Small 3 gallon get same ratio but more often. Dry faster. My temps ride at 75-80 lights on and 65 at night.
Watering amounts will vary with tent heat but same principle applies. Moist. No drench. Focus on life since you chose this path. I transitioned from liquid nutes to top dressed organic. No drench or drought. Steady moist. If dry a bit no worries. If rootball moist the life will rebuild in days. Trust nature with the life. Here is my flower tent
Lazy grower living soil. Continual flower. Just pulled 4.


Just what works for me with little work.
Yes it messy but I load it up…lmao. It gets a bath when clones go in. Wore the floor out in this tent…grin.

4 Likes

Exactly the same as what i do with the greenhouse bio :pray: which is also a organic livin soil type amendment unreal easy to use

2 Likes

The ravenberry auto is loving it. Slightly underfed on the veg nutes as its primarily for photoperiods so i had to guess the auto veg amendment amount :rofl:

2 Likes

Here for an update!
They came back to normal the next day (mimosa auto picture). And group pic is 2 days later.

I’m holding off the watering until I see them thirsty. I never usually drench my soil for any plant. But different forums give conflicting advice and it gets frustrating. For the same pictures I shared here, I got: underfed, deficient, ph issues, and nuteburn. And each with its set of analysis. In my panic, I actually considered salt buildup as I wasn’t watering a lot - and drenched them. (but I use organic nutes - so do they cause salt buildup as well?)

I won’t let dry completely because I have Myco and beneficial micros in there. I just need to find a balance that won’t root rot them.

I got hounded for using dehumidifier water also. Might just go with tap and vinegar to drop PH from 7.5 to 6.5.

I didn’t intend to focus on living soil, or a 100% organic grow. Things just kinda ended up like that for me.
Easy to acquire soil locally, i had everything else on hand (I grow peppers as well).

I’m not sure if my plants are doing well or not. I see grow diaries of the same strains and age as mine but bigger plants (pictures at day 42/44 since sprout).

You guys have been great with advice, and friendly. I Appreciate it!


1 Like

If the life is strong dont worry on adjusting ph. 7.5 is well within range for living soil. Organics are slower to recover BUT tend to have less issues for me.

1 Like

Over water plus light stress