First timer Havesting my Purple Haze. Currently in the week 5/6. Smelling delicious. Top photo was 3/4weeks into flowering.
5 Likes
welcome to the community and hope ya enjoy it here with us. your plants look healthy and beautiful and the trichome production is coming along nicely. most “hazes” these days are hybrids and typically take around the 8-10 week flowering time with the exception that some will take on more of the sativa leaning/true haze side and take upwards to 14 weeks but id say ya got about 4 weeks minimum being your in week 4 of flower
5 Likes
I appreciate the knowledge and welcome. This is going to be a good harvest! What recommendations do you have for Humidity/Temp during Veg/ Flower/ Drying?
3 Likes
ideally lowwr temps and humidity like around 70f temps during lights on and around 60f lights off to help bring out any coloring the plants may express and preserve trichomes from degrading to do higher temps but in summer time im flowering in 80f temps so not a huge deal as long as not above like 86f or below 50f and as for humidity thats the important one out of the two youll want to keep it between 40%-55% but thats just a guideline to use as other growers prefer different temps and rh%. if unable to keep the RH below 65% just make sure you have good air circulation via fans and a good passive air intake to exchange fresh air often (things like just leaving a mesh window open on a tent will give passive air) but honestly if your under 86f and 70% and above 60f and 40-50% i wouldnt sweat it to much. As for drying a 60/60 is rule of thumb and works well which just means 60 temps and 60% Rh which will result in a slower dry allowing the plant matter to be released and not be trapped do to too fast a drying and also preserves trichomes during this phase as well as start the cure process
3 Likes
one of the main environment things is vpd which is a combo of your RH and temps and ideally for veg you want around a 1.0 kpa and flowering around 1.3 kpa which basically means how the overall environment for your plant is and the comfortability of your plants. its something ya can look into as your more comfortable growing and feel free ask any questions ya have and i will gladly answer them the best i can and im sure other community members will chime in and help out as well
3 Likes
I see thank you so much. It really helps. Currently these plants are 80-85f lights on and 60-70% humidity with fan in a 4x2x6’. Had a few issues in the beginning of the flowing stage. Like leaves dying from I believe over fertilizing from then I made a decision to change the soil. Worked out really well saw a huge growth after that. Right now I might need to find something for a lower humidity and temp in preparation to harvesting/drying. Super excited for that and it’s only a few weeks out.
2 Likes
embrace all issues you run into and learn about them as you’ll always run into something new to learn or run into a problem ya know and can fix but there will always well almost always a new issue lol. As for the fear of temps and Rh come dry time dont stress it to to much but if you can stay around 70f and 60%Rh itll come out just fine. its more the humidity at the point you’d like to keep at least under 70% if possible and if struggling just some windflow from a circulating fan on low and if able to at a distance where its just barely hitting the buds and that will help keep the excess moisture off them
1 Like
Welcome @FlareNetHaze. 60-70% humidity is too high for the current stage of your plants. High humidity and temperatures increase the risk of mold formation. Do you have a fan in your tent? If so, let it run above your canopy so the air circulates and it gets a bit cooler. An exhaust fan would also be good to get the humid air out of the tent. Ideally, you lead the exhaust air directly out of the house so it’s not sucked back into the tent. If you have a dehumidifier, that would also be beneficial; you can place it inside the tent or outside where fresh air is drawn in to control humidity.
3 Likes
Vapor Pressure Deficit isn’t some new, super important environmental focal point, it’s basically just another way of measuring the moisture content of the air at a given temperature, or relative humidity; high VPD = low RH. Both are a combination of air temperature and moisture content, just expressed differently. In my opinion it’s easier to say/think 55% RH at 72℉ vs 1kpa. But VPD sounds better and has become a significant marketing buzz word. If you have low humidity just keep them watered and it’s all good. If your RH is too high get a dehumidifier rather than a heater.
I’ll quote Dr. Bruce Bugbee:
“In the old days we’d just say relative humidity, now it is more sophisticated to talk about Vapor Pressure Deficit”
“VPD is overrated as long as the plants have ample water in the root zone”
“High VPD is low RH”
2 Likes
i agree with you to a certain point. we all have different opinions on growing like grow environment temps and humidity and what to do about it but in my opinion vpd is just as important as other things in the grow in fact ever since focusing on my vpd i feel ive noticed faster growth and healthier plants. and sometimes just telling someone to raise there RH isnt always the best idea because if there temps are say high 80s close to 90f and humidity low. you would have to raise that RH to the mid 70%s RH to balance out the comfortability of your plant which like ya said 70% is a risk so reason explaining vpd to someone new to growing is kinda important rather than just saying add a humidifier or dehumidifier
1 Like
Opinions aside, VPD is basically RH, one actually reads low when it’s low, the other reads high when it’s low. Both are measurements of the moisture in the air at a given temperature.
My experience/opinion is that the plants do fine at either high or low VPD/humidity levels . . . our big concern with high humidity in flower is preventing mold/rot. Low RH has never been a big deal, just keep them hydrated.
I understand about explaining VPD/RH/Temp and such to a new grower. The reason I say VPD can be confusing is, take a VPD of 1.3, is that 25% RH @ 58℉ or 80% RH @ 100℉? Both are a VPD of 1.3 on some charts, how do you know which to go by unless you already know the temp or RH? And whose chart do you go by, seems to be some big differences in what should be scientific fact. Fact is if temp and RH are good VPD will also be fine, every time.
2 Likes
thats the beauty of this hobby is we can have different opinions to achieve the same goal and i understand what your saying about the 1.3 kpa but dont you think if a person is learning about vpd and ideal environment that they will also learn in the process whats to high and whats to low resulting in not just focusing on the 1.3kpa but the overall environment? i agree with ya on stuff and i believe we can agree to disagree and still be cool and lets no make this about our beliefs and more focus towards helping this community member
3 Likes
Everyone probably has their own methods of growing. If @FlareNetHaze wants to work on their grow using the VPD table, here’s the table.
I work with that too.
2 Likes
I’m with you, it’s not about arguing, differing opinions are cool and shouldn’t be taken personally. Just my opinion that VPD has become a focal point of environment management when it really is just what we’ve all been doing all along, in a different language.
Plants will do fine either way,
4 Likes
Thank you for this chart! I will experiment with both concepts in due time to find out which one works in my favor.
1 Like