Update - "droughting" the Mango Sherbert
Greetings 420 enthusiasts! This update is about carrying out a 'droughting' approach to my right most balcony girl, the Mango Sherbert. I grew this strain last year and harvested it on the 16th of April, so I am expecting to harvest around a similar time this year, in around 3 weeks, give or take.
Droughting?
For those of you who are not familiar with droughting and would like to know more, and share with some great gardeners, our wonderful fellow member
@Krissi1982, has a thread devoted to it here -->
Droughting and its medicinal effects in cannabis.
Basically it is when the plant suffers the stress of dehydration over a period of time sufficient to provoke a response that can result in increased oil/resin in it's buds to help it cope with the stress of not getting enough water.
A personal experience of droughting
To save doubling up my writing, I have copied this paragraph from a post I made to Krissi's thread mentioned above. Mine is a simplistic view from a personal drought experience I had over a dozen years ago. In hindsight, it was a fantastic droughting grow which produced the best hitting buds that I have ever grown (from bag seed where the bagged bud was average), and it was
100% accidental. The plant was late germinated, early December (Southern Hemisphere) and grown outdoors on a balcony whose stone tiles I have measured on hot days, as reaching up to 50C/122F, so that's a lot of radiant heat causing the plant further stress. It was grown in a small dark blue ceramic pot, with a basic organic potting mix (about 15L, nearly 4 gallons I guess), and only twice in it's life it got some tomato fertiliser in it's water. The dark pot would heat up badly in the sun, and every hot day the plant would be badly wilting by the afternoon. The resulting buds were quite 'airy', but appearance wise they looked like the trichomes had repeatably melted and covered the buds/sugar leaves with a 'varnish like' appearance that seemed to make them very stiff and hard. They were by far the most sticky buds I have grown. This was a plant that you could imagine in the wild, growing out of dry rock crack, beaten by wind and sun. That was because it had made itself very oily, and therefore it could deal with the adverse elements quite fine. I must add, the drought process in this case wasn't just for 10 days but for the whole summer heat flowering period. It was a newbie grow!
My droughting experience reawakened
But stepping back a bit, after I had that 'accidental' droughting experience, I surmised that the dehydration and daily wilting in the hot sun was further assisted by the stone tiles that heat up and radiate more heat back to the plants. It was
@Maritimer whose wonderful investigations into droughting and stimulating insect attacks to increase the potency of his buds, who reawakened in me the experience I mentioned above, all those years ago, and he referred to the published work and thesis of Dr Caplan, on using controlled drought stress to increase the concentration of the major cannabinoids. For those interested, here is a link to one of Maritimer's posts showing the conclusions of that study -->
Dr Caplan's study conclusions.
More recently
2 years ago, I 'semi droughted' 2 plants. It was 'semi' because I was battling some pests on them and I didn't follow it through so much.
Last year, I gave my plants whatever water they wanted, they grew pretty nice and looked much better than the previous year's plants, but I couldn't help feeling that the previous plants that I semi droughted were a little bit more potent than last year's.
This grow
So today, it is day 7 of no watering for the Mango Sherbert, we did get a little rain the 2nd day but there is a roof over the balcony and I don't think much rain if any, actually fell on her. There has been very strong winds to the balcony these past days, up to 80kph, so that must be drying her out too. Plus her 50L container has been heavily drilled out on the sides and bases, I think at least 60 holes, and I find that they do noticebly dry out a lot more quickly than undrilled pots.
So I am doing this post today because she has started quite dramatically showing her response to 7 days of droughting and I wanted to show the pics as a reference point. A lot of her leaves are now hanging vertical. After these photos were taken I gave her about 2 cups of water. The afternoon sun has stuffed her compared to her morning pics. But tomorrow morning, I will evaluate how she is, and if her wilting is no better then I'll probably give her a minimal watering with the view of sending her back into wilting mode again once she's had a little drink and a 'perk up', as I still have about 3 weeks to play with.
The old miners used canaries to check for the air quality underground. In my pots it is the worms, and the past couple couple of days I have seen quite a few dead worms on the tiles, they're feeling the drought stress too.
This morning some of her leaves were flipped and showed some sagging, by the afternoon, there was wilting, and by 5pm many of the leaves were completely lank, and flapping spent in the wind, hanging vertically. So because I still have 3 more weeks to go to harvest, I want to condition her to respond to these conditions of dehydration for repeated periods but ideally not kill her before then.
I looked at her 3 hours after I gave her the 2 cups of water, and she looks to have barely changed, a tiny little bit, but imagine she'll get some strength back over night with the sun gone, and I am interested in seeing how she looks in the morning before I water her again.
Mango Sherbert day 7 of no water - 11am
Mango Sherbert day 7 of no water - 3pm
Mango Sherbert day 7 of no water - 5pm
Anyway, something for the droughters! Be well and I hope your gardens are going great.