Agastache: A Pretty and Useful Garden Plant


If you’re looking for a pretty and useful garden plant, look no further than agastache.

This herbaceous perennial is known for attracting pollinators, and comes in many bright colours.

It smells sweet and herbal, making it a tasty addition to herbal teas.

Agastache is mostly from North America, but can also be found in South America and Asia.

Botanical Name Agastache rupestris, Agastache foeniculum, etc
Common Name Giant hyssop, hummingbird mint, licorice mint
Plant Type Herbaceous perennial
Mature Size 3 to 5 ft. tall
Sun Exposure Full sun
Soil Type Lean soil, well-drained
Soil pH Slightly acidic
Bloom Time Summer
Flower Color Various (blue,purple, red, orange, pink, white)
Hardiness Zones 3 to 10 (USDA) (depends on variety)
Native Areas North America, Asia, South America

Tips for Keeping Your Plants Healthy

Here are some tips for keeping your agastache plants healthy:

  • water regularly, especially during dry spells
  • fertilize monthly with a balanced fertilizer
  • deadhead spent flowers to encourage more blooms
  • divide plants every few years to keep them from getting too crowded

Lighting and Temperature

Agastache prefers full sun, but can tolerate some shade.

It is a heat-tolerant plant, and can even withstand temperatures as high as 100 degrees Fahrenheit.


The plant does best in sandy or gravelly soil that is well-drained.

It is not tolerant of wet or soggy soil.


Fertilize agastache monthly with a balanced fertilizer.


  • Deadhead spent flowers to encourage more blooms.
  • Divide plants every few years to keep them from getting too crowded.
  • With these tips, you can enjoy the beauty and usefulness of agastache in your own garden!
  • I hope this post has inspired you to add a little agastache to your life.


Watering, fertilizing, and deadheading are important for keeping your plants healthy.

And don’t forget to enjoy a cup of herbal tea made with dried agastache!


Agastache plants can get quite large, so be sure to give them enough space to spread out.

If you have any questions about growing agastache


Agastache plants produce many small flowers that are typically blue, purple, or white.

The flowers are very attractive to bees and other pollinators.

Growing Agastache from Seed

Once it gets going, agastache can spread quickly through the garden. It can be split up every year or at other times as needed.

Agastache seeds need to be exposed to cold temperatures before they can grow.

The best way to do this is to sow them directly into the garden in the fall, so they can be exposed to the cold winter weather.

Plant seeds carefully in loose soil, and then give them a little water once or twice in the fall.

If it snows in your area during the winter, they will get enough water to grow in the spring.

If the winters are dry, you can help seeds grow when the weather starts to warm up in the spring by giving them a little water every so often.

By taking these steps, you can enjoy a healthy crop of agastache in your garden for many years to come.

Propagating Agastache

Using pruning shears, cut off pieces of stem that are 6 to 8 inches long in the fall or late summer.

Take off the lower leaves and use the sharp edge of a knife to gently scrape the stems you can see.

The area that was cut should be soaked in the rooting hormone, and the stems should be put in a pot with a sterile mix of sand and perlite.

Use a large poly bag or a humidity dome to cover the pot. In two to three weeks, gently pull on the stem to check on the growth of the roots.

Keep the soil moist, and when new leaves appear, take off the cover. During this time, water your plant regularly but avoid letting water sit on the leaves as this could encourage rot.

After a few months, your plant should be well-rooted and ready to transplant into your garden.

With a little care, you can propagate many plants from stem cuttings.

Agastache Care

Agastache, like many other perennials in cottage gardens, grows very quickly and stays colourful and fragrant all season long.

But because it comes from a desert, it can’t grow very well in very fertile or dry soils, which are usually important in cottage gardens. backyard garden.

So, if you want to put an agastache plant in a cottage garden, you’ll need to plant it in a separate section with other plants that do well in low-nutrient soil. They could be sedum, bearded irises, Russian sage, or black-eyed susan.

Cutting back flower spikes will make them bloom again and help the plant grow more during the blooming season.

When cutting back the flower spikes, make sure to also deadhead any flowers that have already bloomed and fallen off.

Doing this will encourage the plant to produce more flowers. Deadheading is also important for maintaining the neat appearance of the cottage garden.

How do you prepare Agastache for the winter?

Agastache is a beautiful plant that blooms in the summer and fall. Many gardeners enjoy its colorful flowers and fragrant foliage.

However, like all plants, Agastache requires some care to stay healthy and thrive. One important task is preparing the plant for winter.

While some plants need to be cut back in the fall, Agastache actually does best if left intact.

The leaves will help protect the roots from frost damage, and the plant will be better able to survive cold weather.

Deadheading is also important for Agastache, as it can help prevent the plant from self-seeding.

Do you cut back Agastache winter?

If you are growing Agastache for the purpose of having a long-standing plant, it is generally advised that you avoid cutting it back or deadheading it until mid-summer.

Doing so earlier in the growing season could promote new growth during autumn, which may not be hearty enough to withstand winter weather.

On the other hand, if you are growing Agastache as an annual, you should continue pruning and deadheading it as needed.

By taking these respective steps, you will help ensure that your Agastache plants thrive for as long as possible.

Should Agastache be cut back in the fall?

Agastache is a beautiful and versatile plant that can add a touch of color to any garden.

While it is typically grown as a perennial, it can also be grown as an annual.

When it comes to pruning, however, there are different recommendations for each type of plant. If you are growing Agastache as a perennial, it is best not to prune or deadhead past the middle of summer.

Doing so can encourage new growth in the autumn that might not last through the winter.

If you are growing Agastache as an annual, on the other hand, you should keep trimming and deadheading when needed to maintain a neat and tidy appearance.

No matter how you choose to grow Agastache, following these guidelines will help ensure that your plants look their best.

Does Agastache come back every year?

It’s a delicate perennial with fragrant leaves and vibrant flower spikes throughout the summer.

Although traditional varieties feature blue or purple-colored flowers, the latest varieties have vibrant colors like orange and red.

In warmer climates, it blooms repeatedly each year. In cooler climates, it may not bloom as often, but it will still come back year after year.

The key to getting the most out of your agastache is to plant it in well-drained soil and give it plenty of sun.

With just a little care, you can enjoy its beauty for many years to come.

What perennials should not be cut back in the fall?

Perennials are plants that live for more than two years. They are an important part of the landscape because they provide year-round interest and color.

Most perennials need to be cut back in the fall, but there are a few exceptions.

Garden mums, anise-hyssop, red-hot poker, and Montauk daisy should not be cut back in the fall.

These perennials are not as resilient as other varieties and can be damaged by cold weather.

If you live in an area with harsh winters, it is best to wait until spring to trim these plants.

How do you keep hyssop blooming?

Anise hyssop is a drought-resistant sun-loving perennial that will thrive with some basic TLC.

To keep your anise hyssop blooming, simply give it lots of sunshine and plant it in dry to medium earth.

I’ve found that as long as the soil drains well and the plant has some space to breathe (2 feet apart from other flowers), it will do just fine.

Watering should be done sparingly, as too much moisture can lead to root rot. With a little love, your anise hyssop will provide you with beautiful blooms for many years to come!

How do I prune my Agastache for the winter?

If you are growing Agastache for an annual plant, you should keep trimming and deadheading when needed.

If you prune too early in the growing season, it could cause new growth to begin in the fall, which may not make it through the winter.

The best time to prune your Agastache for the winter is after the mid-summer Zeit.

This will give the plant enough time to produce new growth that will be strong enough to survive the winter.

Deadheading (trim) spent flower stalks to keep the plant clean. If you’re growing Agastache for a long-term use plant, don’t cut back or deadhead after the mid-summer time.

Doing so could damage the plant.

How do you care for Agastache?

Agastaches are beautiful and fragrant perennials that make wonderful additions to any garden. Though they are relatively low-maintenance plants, there are a few things you need to do to ensure they thrive.

First and foremost, they need full sun. Some afternoon shade is fine, but too much shade will cause the leaves of yellow-foliaged Agastaches to turn yellow.

They also prefer a good garden soil that is well drained.

Avoid fertilizing until the first year after planting; in subsequent years, fertilize every spring with a 10-10-10 fertilizer or a layer of compost.

With proper care, your Agastaches will bloom beautifully for many years to come.

Jessica Miles

Jessica Miles is a writer for Botanique Boutique, a plant and gardening blog. She has always loved plants, flowers, and anything green. When she was younger, she used to watch her grandfather garden and would be in awe of the beautiful flowers he would grow. Now Jessica writes about all things related to plants and gardening - from beginner tips on how to start growing your own plants, to in-depth guides on caring for a specific type of flower or plant. She loves helping others learn about this fascinating hobby, and hopes that her writing will inspire people to get outside and enjoy nature!

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