by High Country Gardens

Heat-Loving Perennials For Planting In Early Summer

Agastache Glowing Embers
Agastache thrive in warm weather. Agastache Glowing Embers, is a hummingbird magnet!

Different groups of plants grow best at different times of the year.

In my general observations, I have noted that:

  • Perennials from cold climates (zones 3-4) prefer to grow most actively when temperatures are cool. Oriental poppies are a prime example. They begin growing in early spring as soon as the soil thaws. After flowering in late spring, they will go dormant in the heat of summer. Then they sprout new leaves in the cool of fall to begin the cycle once more.
  • Perennials from hot summer regions, such as the Great Plains and the Southwestern United States, wait for the warmth of late spring before they begin growing. Leary of frost, these plants wait for the nights to begin to warm and the days heat up before their season starts. Flowering occurs during the heat of summer and early fall.
Salvia Amistad Salvia Amistad

It's these perennials and warm season ornamental grasses are excellent choices for planting in June. They grow well when the summer heat is on. To ensure success, follow these suggestions:

  • Be sure to water summer transplants regularly. And soak the soil long enough to push the water deep where the roots will follow.
  • Mulch where appropriate. In the Intermountain, California, PNW, Great Plains and Mid-Western states, summer mulching is an effective technique for keeping the soil moister and cooler for roots to grow their best. In hot, very humid, wetter climates, mulching may not be beneficial because of the potential for crown and root diseases.

Plants That Thrive With Warm Weather Planting

Here is a list of Plants for June Transplanting:

Flowering Perennials

  1. Agastache Kudos™ Gold, Hummingbird Mint, Photo courtesy of TERRA NOVA® Nurseries, Inc.

    Agastache Kudos Gold (Hummingbird Mint or Hyssop) is compact-growing and extremely long-blooming with golden-yellow flowers on short, tidy flower spikes from late spring to September...

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    Kudos™ Gold Agastache Kudos™ Gold Hummingbird Mint (Hyssop) Agastache Kudos™ Gold PP#26,410
    As low as $12.99 Sale $11.04
    Per Plant - 5" Deep Pot
    Agastache Kudos Gold (Hummingbird Mint or Hyssop) is compact-growing and extremely long-blooming with golden-yellow flowers on short, tidy flower spikes from late spring to September. The nectar-rich tubular-shaped flowers are highly attractive to hummingbirds. Kudos Golds yellow flowers are an unusual color for the Agastache family.
  2. Desert Solstice Hummingbird Mint (Hyssop), Agastache Desert Solstice

    The flower spikes of Agastache Desert Solstice (Desert Solstice Hummingbird Mint) are remarkable for their fullness, large size, and exotic colorization. The plant is like a semi-dwa...

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    Desert Solstice Agastache Desert Solstice Hummingbird Mint (Hyssop) Agastache Desert Solstice
    As low as $11.99
    Per Plant - 5" Deep Pot
    The flower spikes of Agastache Desert Solstice (Desert Solstice Hummingbird Mint) are remarkable for their fullness, large size, and exotic colorization. The plant is like a semi-dwarf form of our best selling 'Desert Sunrise' but with more flowers. A High Country Gardens introduction.
  3. Texas Hummingbird Mint (Hyssop), Agastache cana

    Texas Hummingbird mint is a very rare wildflower with aromatic, raspberry- pink flowers that cover the plant for several months in late summer. Highly attractive to hummingbirds....

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    Agastache cana Texas Hummingbird Mint (Hyssop) Agastache cana
    As low as $10.99 Sale $9.34
    Per Plant - 5" Deep Pot
    Texas Hummingbird mint is a very rare wildflower with aromatic, raspberry- pink flowers that cover the plant for several months in late summer. Highly attractive to hummingbirds.
  4. Desert Sunrise Hummingbird Mint (Hyssop), Agastache Desert Sunrise, Hybrid Hummingbird Mint

    Desert Sunrise Agastache is a hybrid native wildflower that blooms for months with tall spikes of orange and pink tubular flowers. The nectar-rich flowers are highly attractive to hu...

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    Desert Sunrise Agastache Desert Sunrise Hummingbird Mint (Hyssop) Agastache Desert Sunrise
    As low as $11.99 Sale $10.19
    Per Plant - 5" Deep Pot
    Desert Sunrise Agastache is a hybrid native wildflower that blooms for months with tall spikes of orange and pink tubular flowers. The nectar-rich flowers are highly attractive to hummingbirds. The plant has aromatic, mint-scented foliage and flowers.

Ornamental grasses

Cacti and Succulents

Shrubs and Small Trees

Text and select photos By David Salman

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