6 Heat-Tolerant Perennials You Can Still Plant in June for Colorful Blooms That Won't Wilt – Even in a Heatwave
It's not to late to plant these heat-tolerant perennials in your garden. They add sizzling summer color that doesn't fade – even in the hottest weather.
If you didn’t get all your planting done in spring, don’t worry! It’s not too late to add a few more heat-tolerant perennials to your garden in June. There are plenty of tough, yet lovely varieties you can plant in the middle of summer that will provide you with beautiful blooms year after year – no matter how hot the weather gets.
Though you can plant certain heat-tolerant perennials in June, it’s best to install new plants in the morning or evening when temperatures are a bit cooler. This helps prevent transplant shock and allows them to settle into their new home more easily. Once they’re established, they will be able to tolerate even the hottest summer sun beating down on them.
Here are the best heat-tolerant perennials to plant in June for blooms that won’t wilt and fade when a heatwave hits. Add these gorgeous plants to your garden now for heat-proof flowers that return each summer.
1. Black-Eyed Susan
Black-eyed Susans are just about the lowest-maintenance perennials you can find. They easily self-seed and spread to fill in garden gaps. They thrive even in poor, rocky soil. Plus, they almost never need water.
Just plant these heat-tolerant perennials in a sunny spot in June, give them a drink to help them settle in, and then sit back and watch them bloom. I transplant the black-eyed Susans in my garden all the time. They never mind being moved, even when I do it during a heatwave in the middle of summer. As long as you give them some water after transplanting, that’s all they need.
Get a 3-pack of beautiful black-eyed Susans from Monrovia at Lowe's.
2. Sedum
Sedum is another one of those tough perennials that thrive on neglect. This heat and drought-tolerant succulent comes in many forms, from the common 'Autumn Joy' that is taller and puts out pink blooms in late summer to the creeping lime green 'Angelina' ground cover that’s perfect for a rock garden.
I’ve planted sedum in June and even later during the dog days of summer and it has never had a problem settling into its new home. This succulent perennial plant seems to never wilt and once you plant it in the ground, it establishes itself quickly.
You can get Autumn Joy and Angelina sedum from Fast Growing Trees.
3. Lavender
Lavender looks so delicate and beautiful – and its fragrance is amazing – but it’s actually a really tough, heat-tolerant perennial. Plant it in full sun in a location with well-draining soil. That’s about all this fragrant herb needs to survive.
I planted a small lavender seedling in June a couple years ago, watered it a couple times, and then left town for the rest of the summer. It is now thriving and putting out tons of beautiful blooms. This is truly one of the best low-maintenance herbs to add to your perennial flower garden.
Explore different types of lavender for your landscape from Garden Goods Direct.
4. Yarrow
Yarrow is one of those underrated plants that not many gardeners think of growing, until you see its beautiful, bright blooms in someone else’s landscape. This heat and drought-tolerant perennial is similar to lavender in its needs. Give it full sun, well-draining soil, and that’s about it.
I treat the yarrow in my garden similar to my lavender. I planted it a couple years ago and then totally ignored it. Yet, now it’s thriving and filling in the bare spots in my sunny perennial border garden well.
Get a pretty pink 'Firefly Fuchsia' yarrow from Proven Winners at the Home Depot.
5. Daylily
Daylilies are very easy to care for and, depending on the type you grow, they can actually become a nuisance to get rid of. The common orange "ditch lily," as they’re often called, is one of my worst garden enemies because they take over and choke out every other perennial I plant near them. But cultivated varieties, like the highly popular 'Stella d'Oro' daylily, stay in their lane and add brilliantly colorful to perennial beds.
Daylilies have fleshy tuberous roots that divide and transplant well, even in the heat of summer. Use a sharp shovel to divide existing daylilies in your garden to transplant them elsewhere and let them fill in an empty corner. Or you can explore other beautiful daylilies for sale from the Home Depot.
6. Blanket Flower
Blanket flower is a heat-tolerant native flower that returns year after year in a variety of warm hues of red, orange, and yellow. This wildflower is found in meadows and prairies across the U.S. and has become increasingly popular in perennial garden beds for its easy care and tolerance of a variety of growing conditions.
You can plant a blanket flower in June and get blooms by the end of summer or fall. This is a somewhat short-lived perennial plant, but it readily self-seeds. New plants will emerge in your garden without you lifting a finger, similar to a black-eyed Susan.
