After treating the infested violas two weeks ago, the violas are doing much better overall.
My tomatoes were looking great last week. They were at the 6-7 leaf stage about 25 cm tall, and a perfect dark green throughout the plant. Notice that the area outlined here is the same colour as the area outside the circle. It’s common, in my experience, that you will see symptoms of underfeeding here […]
You can see my attempts to bring my deep water beds under control after my computer irrigation pH meter fiasco. I have since re-calibrated it and it should be good, but I’ll be monitoring it by hand more astutely from now on. (I hope it only takes one major crop disaster to learn a lesson […]
Well I sprayed the violas early this morning. I used a fairly heavy dosage (top of the suggested range) and sprayed them until run-off. I know from past experience that this might damage them (the spray is slightly phytotoxic) but I think it’s my only chance to save the crop. They will die if I […]
This morning I added acid to all the float beds. I always find that adjusting the beds after having the water in them is difficult–the amount of biocarbonates in the bed seems to vary quite a bit, so sometimes I can add a lot of acid and make no discernible impact, other times I see […]
Of all the crops that we’ve had trouble with in the greenhouse, edible flowers are certainly number 1. I believe that it is because we don’t have enough of them to keep the climate at the right temperature for them, so they are not in their ideal location–they have to put up with what we […]
It is supposed to be a day-off (or at least a very slow day) but given the problems we have had with our injectors, I wanted to come and check the levels of our grow beds. Many of these were just filled early in January and may have been filled with poor fertilizer because of […]
General notes: Several weeks ago I thought I had sudden problems in several crops. Beginning in the eggplant I noticed damage on the leaves which progressed into necrotic (dead) spots that were dry and papery. It was very aggressive. A day or two later I noticed similar symptoms in the tomatoes and cucumbers. At first […]
If you’re interested in passive solar greenhouses, I believe that you must look at the Chinese model. A few years ago I joined a tour of greenhouse operators visiting passive solar greenhouses in China and I’d like to tell you a bit about them.
There are few things as discouraging as raising a crop only to have it taken over by tiny insects that you can’t seem to control. We have a few critters making an impact on our greenhouse right now; spider mites, thrips and new this week: flea beetles. But today I’m focusing on aphids—a pest that […]