I went out to walk through my garden (what little garden I have so far) last night to find something strange. One of my three polemonium (they're in a clump) was badly wilted. Just one--the others, planted right next to it, looked perfectly fine.
And one of my three blue/white clips campanula (also planted in the same general location) is near death. The others are growing vigorously!
I've only noticed it since we've had this high heat and humidity the past few days. The soil is uniformly moist. None of these pants gets more sun than the other. The one thing I did notice with the campanula was that some of the soil around it had sunken and its crown was too high...but its neighbors have the same problem. I added some compost around the plants to cover any exposure.
Anyone else have wilting perennials with this heat? Any guess as to what might be causing these couple plants to suffer while their neighbors look perfectly okay?
What I don't get is why the two other polemonium--planted right next to the first one--and the two other campanula look just fine. I mean, I can see why my echies look droopy...they get more sun and it has been REALLY hot. (They also perk up when the sun starts to set, just as most perennials do when it's hot.) But I don't get why these two plants are pouting. :(
Take a look at my Jackmanii Clematis. When it was really hot and humid, it did this while in the direct sun but by the time the sun was at 3 pm, it perked right up and stayed beautiful until about 11 am the next day. Hasn't done it since the weather turned cooler. I wondered if it was some kind of protection it does to shade the inner portions from burn.
I've learned that is the plants natural way of protecting themselves from too much stress. I was also told that when the plant does that you should wait until conditions are back to normal; if it perks up then don't water it, if it doesn't water it. I've followed those lines of thinking and everything seems to be okay. Its when you water right away each time it happens whether it needs water or not you're risking root rot by drowning the plant.