Heat Tolerant plants

woodswalker88(6)July 16, 2012

Hi! I'm a new gardener, just started last year. I guess I picked the wrong time because the heat is really really bad for plants! We had rain at the end of june so I wouldn't really call it a drought...but the 100 degree temps are making certain plants just shrivel up & turn brown. "Mulching" is really not enough...maybe if I stuck an umbrella over these plants? A mini-fridge? Nahh...I don't think so, because I plant the garden & not the other way round. I'm not wasting time coddling high-maintenance plants...whatever doesn't make it, I will just plant something else in the spot next year!

I would like to hear from others about which plants have tolerated the heat and which ones haven't. As for me, my Encore Azalea (which is supposed to tolerate sun as well as shade) doesn't look as if it will make it. (The spot is sunny now, but I'm hoping it will be shady when the nearby tree grows more.)

I also see that the viburnums are turning brown around the edges. I thought native plants were more hardy?? Hydrangea is also looking pathetic. Several weeks ago I planted an astilbe in a shady spot, and even that was starting to crisp up. The coneflowers (planted about 6 wks ago) are just about hopeless.

I planted some blazing stars and these guys are gorgeous, just like the picture, and they show no signs of wilting. So far the Rose of Sharon and the crepe myrtle are hanging in there.

I wish plants had a heat rating as well as a cold rating.

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Di_in_PA Zone 7a - Philly 'burbs(7)

Hi Woodswalker, my coneflowers and black-eyed susans are amazing this year; they must love this hot, dry summer. Perhaps yours needed a bit more than 6 weeks establish well - they'll probably look better next year. I put a thick layer of licorice root mulch on my sunny bed in the spring and no further maintenence. Like you, I believe in "survial of the fittest" gardening; if they can't make it on their own, they're outta here.

90% of my beds are shade or part-shade and my hosta, hellebore, european ginger, variegated solomon's seal and epimedium are taking the heat and lack of rain pretty well. Most of my ferns, ligularia, astilbe, lamium and brunnera are crispy critters though.

Other sun or part-sun lovers that are holding up well: thread-leaf ansomnia, meadow rue, heurchera and sedum, especially the smaller, ground-hugging types.

My perennial geraniums, with the exception of 'Rozanne' (love this one!) are toast.

    Bookmark   July 22, 2012 at 10:21AM
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