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Southeast Regional Reports

A Pair of No-Melt Perennials for Heat and Humidity | Southeast Regional Report

A Pair of No-Melt Perennials for Heat and Humidity

Spend a summer day with any recent human transplant to the Southeast and I will wager that you’re going to hear, “It’s not the heat—it’s the humidity!” exclaimed with fatigued astonishment. Those of us who have grown up here know it’s best not to call out the weather-that-must-not-be-named. The gardener may be wilting in it, but have you ever wondered if the steamy air is a strain on your plants?

High nighttime temperatures and drought are by far the biggest stressors for plants in summer. For some perennials, especially those that come from drier climates, humidity can throw a hard punch by promoting fungal diseases that lead to meltdown.

There is a surprisingly long list of perennials that stand up to our heat and humidity, but these two favorites are also less attractive to deer and essentially pest-free. Add them to your fall shopping list…

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  1. jwalcott 07/06/2019

    Are you aware of any nurseries offering saltmarsh mallow for purchase? It is not available to buy locally in my region of Montgomery, Al and I would like to know where I could obtain it. A search on the web yielded no results. Maybe I'll need to find a seed source for this hard-to-find plant? I'm itching to try it out!
    I do own some varieties of Aster laevis and agree with you that it performs well through the heat of the summer. I'm always on the look out to purchase any new-to-me selections when they pop up in nearby nurseries.

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