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First proper grow attempt (outdoor)

3 years ago
Room Type
Grow medium
Photos & Videos
Grow Conditions
Week 4
12 hrs
Light Schedule
Pot Size
Pot Size
Commented by Sauswaus Sauswaus
3 years ago

- April 21st, Day 27 -

Forgot to bring the plants inside last night. Temperatures dropped to 10°C (50°F). Hope one cold night doesn't stun them or anything.

- April 19th, Day 25 -

Changed all the pots today to give them a bit more space, but not their final pots yet. They look much better already though. Contacted Plagron's helpdesk asking if it should be OK to transfer young plants into their Royal Mix or if they would burn. Expect I'll have an answer after Easter.
Took a train to Amsterdam to stack up for 4/20 because I'm getting bored with the stains I can get around here. Dropped by Barney's Farm to pick up a gram of some of the strains I'm growing to sort of sample them. Super friendly and helpful staff btw.

- April 17th, Day 23 -

Done with exams and deadlines so time for an update.

Overall everything seems fine. Did notice some leaf deformities on day 19 though. I've added pictures to week 4. Not sure if these are just innocent mutations or if they need to be looked at. Tangerine Dream seems to be showing some burnt leaf tips which makes me wonder if I'm overfeeding. Been adding just under what the grow schedule suggested at first but started to reduce based on the burnt leaves and a tip from the comments. We'll see what happens.
I want to move then to bigger pots soon but between sunny days it still gets quite cold so they still have to fit in the windowsill. Think I'll change pots this Saturday if I can find the time.
Also planted some fennel and other herbs known for attracting ladybugs because I had problems with aphids last year. Don't have sunflowers this year either so that might help aswell.

Grow Questions
Sauswaus week 5 started grow question 3 years ago
Cant find pH section. Leaf edges are burnt. Working on a student budget, had to postpone buying pH meter. Local tabwater is 7,03 - 7,74 according to internet. Ill be adjusting pH starting Thursday. Can I go to 6.0 straight away or should I go down in steps of say 0.2 to adapt
Leaves. Edges burnt
Waters answered grow question 3 years ago
Go straight down man, no need to do it gradually. You can also use baking Sosa to raise ph and lemon juice to lower it.
Sauswaus week 9 started grow question 3 years ago
Lower two sets of fan leaves have gone yellow, leaves on internodes in between haven't changed colour. Not sure what's causing this. Nutes? (3-4 more weeks of time released nutes in soil) Too much water? Did water a bit extra because I wasn't going to be home for a couple of days
Leaves. Color - Yellow
Show all Answers (2)
Silasbotwin answered grow question 3 years ago
Hey bro! Looks like Nitrogen diffiency my friend, Nitrogen is mobile so it will gradually move up the plant from bottom to top.. You don't want this, especially in veg. Try to raise your N or use some Bio bizz fish mix or garlic beast as a foliar spray, 2ml per litre is good. A couple of times should do the trick. Keep your Ph between 6.3 and 6.8. Water a couple of times with water at Ph 6.5. Then go back to your normal nute schedule. Only water your plants when dry. You'll be fine :blush:

Happy growing :sunglasses::seedling:

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TC_Connoisseur week 4

Hey @Sauswaus, I just wanted to weigh in real quickly on that leaf deformation and tip burning, I have seen similar in my grows before and it came down to pH issues so I would wonder what your pH of your water and run-off is, since they are such small containers it should be easy to check and adjust the pH.

I would start with a flush, then pH adjustment flush, then followed by a pH adjusted nutrient application...hopefully your soil drains well if not your may want to be careful on flooding the root zone that heavily. Also I've found a foliar spray of seaweed/kelp extract is always welcome to any plant showing signs of stress.

Show all replies (2)

@TC_Connoisseur, Thanks again for an extensive reply.

It's a lot of information to take in as I am completely new to nutrients, pH and all that, but the main reason I enjoy growing is because there is so much to read up on and learn about so I will definitely check out your suggested bonus reading.

I am also positive that my tap water does not contain any Chlorine. The Netherlands has very strict rules on the quality of our tap water.



8.2pH is pretty high for tap water, but I have no idea what your source is as we are definitely on different continents. Also a sticking point here if you are planning to use tap water and a soil with microbes to balance pH you will need to be very sure there is no Chlorine or Chloramine in your water, they will destroy your microbes that you believe are balancing your pH. Chlorine is easy to use a cheap aquarium air pump and stone for 24 hours and volatilize off, Chloramine requires a carbon filter to remove. The USA has mostly moved to chloramine so we have to carbon filter here.

Now to address your questions, here is what I see.

- Incoming water 8.2, outgoing water 6.0-6.7.

Your water seems to not be heavily buffered (Low Total Alkalinity) or your soil is well buffered, either way your soil is doing most of the work for you and you should continue to adjust each time as you are, this will help but take a few waterings to build a buffer in the soil. I (almost) always pre-flush/buffer my soil a week before planting/transplanting and regardless of how much I trust the soil manufacture to do their jobs right.

- Soil 6.2-6.9, adjusted water input 6.0, water out 5.9-6.1

I would suspect the reason for the pH drop in the run-off is due to water soluble nitrogen running off, nitrogen is potentially acidic and could account for that minor drop especially if your water lacks significant buffer, it could also be calcium(buffer) in your water getting bound into the soil. If you are measuring your soil pH by from the top half only you may be getting a higher portion of that calcium or other buffer from the water that is binding to the top layers as it runs through and the more water soluble nitrogen is hanging out lower in the soil.

Now all of that said, I believe now that you have a meter and are on the right track with adjusting your pH you should be fine so keep doing what your are now doing. I also always suggest some Kelp/Seaweed extract in a Foliar Spray or even root drench also to give a quick shot of micro nutrients whenever a plant shows any stress. Also find out if you have Chlorine/Chloramine in you water, if you do you need to eliminate this before getting good organic buffering results, otherwise sticking to bottled liquid nutrients with pH up and down is the better route.

Some Bonus Reading,
If you have time and really love complex systems google both "soil ph and nutrient availability" to see what nutrients are most available, and also "Mulder's Chart" which gives each nutrients antagonistic and synergistic effects on each'll probably hate trying to make sense of this but its good to reference as I never assume one issue is the cause of everything, in your case your pH is the big problem I saw but as you find out more it may end up being a nutrient that the soil is lacking or even one that is too high leading to a lock out situation at your particular pH. Everything is connected and the more data points you have the better your assumptions and corrections will be.


@TC_Connoisseur, Here is a short version of my latest update:

pH meter just came in with the mail. Calibrated and took measurements right away. My tapwater measures at a 8.2 pH, which is even higher than I expected. What's confusing me is that the soil measures at 6.2-6.9. Flushed the pots for more measurements.

- Runoff water flushed with the 8.2 pH tap water I've been giving them from the start: pH 6 - 6.7 differing between pots.
- Runoff water flushed with tap water corrected to pH 6.0: pH 5.9 - 6.1

Now I'm wondering if - just like the Royal Mix I'll be using - the Pokon Seed & Cutting soil is self-regulating organic soil. Couldn't find the answer to this anywhere so I'm assuming the answer is no. Soil pH should be at 5.2-6.2 from the bag though.

Any ideas? I have no idea what to make of this.

GrowBeforeHoe week 4

The little deformities don't really matter I think. Transplant your ladys in some bigger pots and their will be fine.
Your grow is looking pretty good until now.

Keep Growing! :+1: