Whitefly are an infamous greenhouse pest. One of the best controls for whitefly is Dicyphus hesperus (referred to as dicyphus from here on), a true bug that will feed on a wide variety of greenhouse pests. Dicyphus works best as a preventative from whitefly (and other insects) establishing, so hasn’t been used traditionally (as it is […]
Over the last week we began to see a dramatic increase in aphid populations in our greenhouse, especially in the lettuce.
This week we introduced quite a few biological control insects (for prevention). * hypoaspis – these are mites that live in the soil or other media that we grow plants in. We use them primarily to control thrips
This last week was very busy for our Integrated Pest Management (IPM) program. My sister (and greenhouse business partner) built a home for grass aphids on Thursday. It always feels a bit strange to protect the aphids, but we use them as food for keeping colemani wasps in the greenhouse. This is a lot cheaper […]
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 […]
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 […]
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 […]
Thrips are currently the bane of my greenhouse. Thrips are a tiny, long and narrow shaped insect which love to attack flowers and also the growing point of plants (especially cucumbers, though thrips are not too fussy). They often damage the fruit when it is still close to microscopic-sized, killing part of the fruit, and […]