Plants that seem to attract more pests to the GH?

[BrassavolaStars]

Hello all,

Every time I go into my greenhouse it seems to be a mixed bag of excitement and disappointment. Today, I ventured in for an expansive watering and found a new pest problem in addition to mites.

A new plant I recently brought into the greenhouse, a Cestrum nocturnum (night-blooming jasmine), was utterly blanketed in aphids. Every flower had at least 15 aphids. The plant was clean when I brought it into the greenhouse last month but has since developed the infestation.

Since they aphids liked this plant so much, this made me wonder if certain non-orchid plants are more likely to attract pests to my orchids?

It seems my citrus, my stephanotis, nor sambac jasmine (which was brutally attacked by mites this season but was fine for years) did not attract many pests but once I introduced a Gardenia and the Cestrum I got mites and aphids respectively.

Should I not have them cohabit? So far, the aphids were completely disinterested in all the other plants but I am not sure it will stay like that.

That said, the mites really decimated the foliage on my poor sambac and dendrobiums. I am particularly worried about the Sambac as the leaves are rather chlorotic now.

For better news, my Angranthes grandalena has a spike and my Miltoniopsis morris chestnut is blooming for the first time and looks great.