Powdery mildew resistant.
PM is one thing... it's the botrytis that he will most likely have to watch out for, and he has said in my thread that he just ditched a bunch of plants due to botrytis, same as me.
@pahpah-cee Maybe PM-resistant cultivars are also botrytis-resistant?
@gubblebum You may want to consider one of these, which works on PM and Botrytis
CleanLight fights powdery mildew on plants with UV light.
www.cleanlightdirect.com
or the Pro model to save time
CleanLight UV control of diseases, very effective against powdery mildew, botrytis and bacteria.
www.cleanlightdirect.com
Or you may even want one of these if you are investing for your future
CleanLight Lazyman is a fully automated system which is easy to install and programme. Suitable for rooms from 10 to 50 square meters.
www.cleanlightdirect.com
I purchased (yesterday) one of these Air cleaners from this company (for an indoor flowering room).
The CleanLight Air is a revolutionary new air cleaning product. Kills spores, funguses, viruses and bacteria in the air with UV-C light.
www.cleanlightdirect.com
I will also be using a pair of these
I figured for myself that I don't need the handheld Cleanlight unit, because my plants will be getting UVA+UVB from the Solacure.
But you best believe I'll have one of those handheld Cleanlight units here pronto if I ever see any PM or Botrytis.
FYI, the prices shown are including European VAT which we do not pay here in Thailand, so everything is 20% cheaper once it hits the shopping cart. Which is good because this Cleanlight gear isn't "cheap".
FYI2, many plastics used in greenhouse construction are UV blocking (they do this so the plastic doesn't degrade in the sun). UV plays several vital roles in plant growth and also plant health in regards to fighting molds/fungus/mildew. Even if you were not fighting bud rot (Botrytis) you would be well advised to add UV to your greenhouse for many other benefits.
No, I don't work for the UV industry! HAHA.
The other issue you have not raised. The heat.
I use a small plastic tent-style greenhouse for raising my seedlings. I put a temp/humidity meter out there and it sometimes reaches 44 C temps (111 F for others reading). My baby girls LOVE the intense heat, and the fact that the condensation is dripping from the walls and ceiling makes for a wonderful nursery... but DAMN.... actually growing the whole way through flower in a greenhouse is going to be one hot crop!
If the heat is too high you'll need CO2 supplementation, which is normally provided for larger scale rooms by burning propane.... yet MORE heat in your greenhouse. AND if you want to use CO2 you tend to need to seal the "room". Most greenhouses are not perfectly sealed.
Ohh this spirals away doesn't it?
I'll tell you what we are trying here, and I'm not far from you. Same rain patterns etc.
We are building a 12m x 8m (36' x 24') roof made from clear plastic roof shingles.
This will be ringed by a chainlink fence to keep the kids, cats, and chickens out.
The lower edge of the roof will be 3.5m (11.5') and the highest part at the peak will be 4.0m or maybe a bit more depending on the angle.
Inside I will probably have a Lazyman (or two) as I posted before, and some supplemental lights to keep the girls awake, so they don't flower until I am ready for them to flower. Probably my supplemental lighting will not be strong like an indoor grow, I want just enough PAR to keep them from flowering.
Then on the posts that hold up the roof I will have oscillating fans, maybe 6 to start, I may end up with 12, but I don't want to start a hurricane, plants can get wind damage if they get too much "wind".
I will also be defoliating my plants as they come into flower, allowing more airflow.
or I'll simply move them inside for flowering if this whole plan fails.
