Updated at: 21-06-2022 - By: Sienna Lewis

A member of the mint genus Agastache, widely known as Sunset Hyssop, Agastache rupestris is a stunning and useful plant. Despite the fact that it is one of the few hyssops that can be grown from seed, it can also be propagated by cuttings of both semi-hardwood and softwood varieties. With its abundance of bronze and yellow flowers atop blue-green foliage in late summer, the Sunset Hyssop thrives even in the most difficult soils. Picking this showiest bloom when the buds are only slightly open is your best bet for propagation.

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Snip some fresh shoots and test their readiness to harvest. If the shoots snap like green beans, they’re ripe. As soon as buds begin to appear, keep an eye on the plant every week, and be ready to take cuttings when they are ready.

Make sure to choose shoots with leaves in various stages of development, some still very little and others practically mature. Maintain the plant’s look by snipping off the young branches near the top at various points around the plant.

Rooting hormone should be applied to the cuttings immediately, and they should be placed in a moist seed-starting medium such as peat, sand, vermiculite, or perlite.

Where to plant Agastache

An acidic, alkaline, or neutral pH balance is excellent for growing Agastache. It can be be grown in soil that is damp but well-drained. They are drought-resistant plants that thrive in full light and should be placed there. Cottage, informal, and wildlife gardens benefit greatly from the inclusion of Agastache in flower beds and borders because of the plethora of bees and butterflies they attract.

By clicking, you may learn more about different types of soil and how to identify your own personal type.

How to plant Agastache

Add plenty of organic materials to the planting area and properly mix it to enhance drainage.

How to care for Agastache

Keep your plants well watered while they are young, then reduce the amount of water as they become older. Agastache can produce more flowers if it is started indoors in late April and then moved outdoors in early summer.

How To Propagate Agastache Successfully

Method #1. Seeds

Agastache seeds should be started in a greenhouse, according to seasoned gardeners. This will ensure that the seeds will germinate and that they will be protected from the adverse weather conditions that may come their way. If you live in a place where the last frost date is in February or March, you should start your seeds inside six weeks before that date.

Starting seeds indoors

However, you must ensure that the seed starting mix is wet. Keep the soil moist and the temperature around 55 degrees Fahrenheit while starting the seeds as you would any other plant. The seedlings can be transplanted in May, either in pots or at the garden with a 12-inch spacing between each plant.

Starting seeds outdoors

Sowing seeds in the fall, knowing that they would go dormant in the winter, is an option if you are confident in the weather. You can thin the plants to a foot apart once they have four leaves. If you don’t protect your seedlings from harsh conditions, they will blossom later than transplants, so plan your sowing schedule accordingly.

Method #2. Cuttings

Cuttings can be used to propagate some agastache plants instead of seeds. Starting agastache from cuttings or divisions will result in plants that are identical to the parent plant, as expected. As long as the plant is healthy enough to resist the cutting process, you can take them yourself.

Collecting cuttings

Agastache may be grown from either softwood or semi-hardwood cuttings, which is a positive feature. The best time to take cuttings is when the plant is just starting to bloom and has a lot of fresh growth on its stems. In the event that a shoot snaps, it is possible to collect cuttings.

Shoots with a variety of leaves are desirable. Some may be mature, but others may still be developing. Keeping the agastache’s look by taking cuttings near to the crown is important.

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A seed-starting medium should be used with rooting hormone powder once you have the cuttings. In order to enhance roots, keep the soil temperature and moisture between 68 and 75 degrees. In addition, a temperature of 70-75°F at the container’s bottom is ideal for root development.

Method #3. Division

Finally, agastache can be propagated by division, which is extremely important for preserving the plant’s health and appearance. Most gardeners can use mature hyssop that has outgrown its current place to produce additional plants by cutting it back. The optimum time to divide agastache is in the spring, when it is beginning to grow new leaves.


To avoid damaging the roots from the heat of the afternoon, it’s best to divide your plants when the temperature is cooler. Moreover, if you divide early in the morning, the divisions will be decided by the time the day heats up. Determine if you want to split the cluster in two if the plant is too large before digging it up.

Separating and establishment

Once you have the clump, you can break it apart by hand. Make sure each portion has enough roots to grow into a full-fledged tree. As long as the place is well-lit and the soil is well-draining, you can begin these divisions in the greenhouse or in the garden right away.

You may help the divisions grow by watering them immediately after planting and keeping the soil moist until they are established. Keep in mind that agastache divisions grown indoors in containers will dry out faster. Nevertheless, you should use caution when propagating and establishing agastache and avoid overwatering it.

How do I take cuttings from Agastache?

Rooting. Use a seed-starting medium and rooting hormone powder once you have your cuttings. In order to enhance roots, keep the soil temperature and moisture between 68 and 75 degrees. In addition, a temperature range of 70-75°F at the container’s bottom is ideal for root development.

How do you propagate Agastache blue boa?

In the spring, divide the plants, or in the late summer, take semi-ripe cuttings for overwintering. Place two forks side-by-side in the middle of the plant to divide it. The prongs gradually separate the plant by gently squeezing the handles back and forth.

Should Agastache be cut back in the fall?

Taking Care of Your Agastache at the End of the Season

Pruning and deadheading Agastache perennials after midsummer is not recommended. In the fall, if pruning is done too late in the season, the new growth may not be able to withstand the freezing temperatures.

When should I cut back Agastache?

Early spring is the greatest time to prune herbaceous plants to encourage new growth. It is also possible to deadhead and lightly shape anise hyssop from spring to mid-summer. After that, refrain from cutting to avoid damaging fragile new growth in the event of cool weather.

How to propagate plants by cuttings: It’s easier than you think!

31 related questions were uncovered in this search.

Can you grow Agastache from cuttings?

Planting seeds or divisions in spring or rooting semi-ripe cuttings in the late summer or winter in a greenhouse are the best ways to reproduce Agastache.

Does Agastache like full sun?

Likes. Full sun and well-draining soil are ideal growing conditions for these plants.

Is Agastache blue boa edible?

There are many uses for the licorice-scented leaf, including in salads. En masse, they look great in a perennial border or in a garden of herbs. Once established, drought tolerant.

How tall does Agastache blue boa grow?

‘Blue Boa’ is a strong hybrid cultivar (the exact parentage is uncertain) with a stiffly upright habit that normally grows to a height of 2 to 3 feet. From June to September, enormous terminal spikes (up to 6″ tall) with beautiful, deep violet-blue flowers rise above the clumping leaves.

What is the best time to take cuttings?

Early morning is the optimum time to take cuttings from a parent plant because it is still turgid, meaning it is full of water. The best possibility of rooting is ensured in this manner.

Are Agastache Hardy?

In the heat of summer, Agastache is better able to withstand drought than many other plants. When established, popular cultivars like ‘Blue Fortune’ can withstand temperatures as low as -15C (5F).

Do you cut back hummingbird mint?

Hummingbird mints should not be pruned back in the fall. Do not remove the old stems from last summer’s growing season. The stems’ nutrients feed the crown and strengthen it against the cold of winter. Cut them back in the middle of spring in your location (about a month before the last frost).

Is Hummingbird Mint invasive?

Average, dry to medium-dry soils in full sun are ideal for growing radishes. Additionally, it can handle drought, poor soils, high temperatures, and high humidity in the summer months. In the garden, this genus’s plants are non-invasive.

How do you grow Agastache in blue fortune?

Drainage is critical! When grown in full light, agastache rarely needs to be divided. Deadheading, or removing faded flowers, is an effective way to prevent seeds from germinating and spreading. A more compact plant and more flowering stems can be achieved by removing new growth in the spring.

How do you pronounce the word Agastache?

Pronounce it ag-ah-STAK-ee for the sake of uniformity.

Does Agastache smell like mint?

There are few Agastache species as long-lived as Agastache rupestris (Licorice Mint Hyssop). The whole plant smells like licorice and mint thanks to its smokey orange blossoms and lavender calyxes.

Are Agastache poisonous?

Do you know if Agastache cana is harmful to humans? There have been no reports of harmful consequences from Agastache cana, according to the literature.

How to Grow and Care for Anise Hyssop Flowers | Gardener's Path

Are Agastache plants poisonous?

Is it need to be watered on a regular basis and fed every now and then? Due to the fact that agastache belongs to the Labiatae (mint) family, it should not be harmful to animals in any way.

What can I plant with Agastache?

Agastache gets along well with a wide variety of plants. Similar to Agastache, Russian Sage, Lavender, and Rosemary all thrive in drier environments.

What zone is Agastache?

USDA plant hardiness zones 4–10 are suitable for Agastache plants. If they are well mulched, most plants can tolerate temperatures as low as 10 degrees Fahrenheit (-12 degrees Celsius).

Can you plant Agastache in pots?

Despite the fact that Agastache prefers well-drained soil, it thrives in pots.

How long does it take cuttings to root?

Make sure to keep the cuttings hydrated with fresh water until they’ve rooted. In most cases, rooting takes 3-4 weeks, although it can take up to 8 weeks for some plants. To pot up a cutting, the roots need to be 1-2 inches long.

Is Agastache Hardy in UK?

In the mint family, Agastache is a perennial herbaceous plant from North America…. A hardy perennial in the United Kingdom, this plant should be grown as a half hardy annual.

What does semi ripe cuttings mean?

It is a form of softwood cutting that is taken at the conclusion of the growth season, known as a semi-ripe cutting. To distinguish it from softwood and greenwood cuttings, which are taken earlier in the growing season, it is given this name.

What is another name for hummingbird mint?

Hummingbird mint, or hyssop, is another common name for the fragrant and long-blooming perennial agastache. Hummingbirds, as the name implies, are drawn to them. For a garden that attracts pollinators and is resistant to deer and rabbits, agastache are a must.


For Acapulco Deluxe, it’s recommended to use 1-gallon or smaller containers. It’s best to grow them in a medium with a pH between 5.8 and 6.2, which drains nicely. A wide variety of growing mediums can be used, but avoid ones with a high water holding capacity. The liners should not be planted too deeply; instead, they should be planted so that the original soil line of the liner is even with the surface of the growing medium in the new container.

Overwatering Agastache will cause root rot and poor performance because they dislike damp feet. A lack of growth and yellowing are signs that too much water is being used. Allow the soil to dry moderately between irrigations when watering is necessary. In spite of its drought tolerance in the landscape, mature Mexican hyssop plants planted in containers should not be allowed to become extremely dry.

Light-to-moderate feeders, they are. Water-soluble and controlled-release fertilizers can be used to give nutrients to plants. Water-soluble fertilizers can be applied at 100 to 125 parts per million nitrogen per irrigation or at 200 parts per million if necessary. At a rate comparable to one pound of elemental nitrogen per yard of growing medium, controlled-release fertilizers are typically added to the soil prior to planting. Soft growth and delayed flowering are common side effects of using excessive levels of fertilizer.

As soon as the plants have acquired a foothold, a little pinch one to two weeks after planting can be helpful. Larger containers may necessitate an extra pinch of effort.

No height management methods are needed for Acapulco Deluxe. The spacing between plants and the amount of light they receive can help control unwanted stem elongation. Spray applications of 2500-ppm daminozide, 2500-ppm daminozide + 1250-ppm chlormequat chloride, 30 ppm paclobutrazol, or 5 ppm uniconazole are recommended if the plants need to be toned.. One application is usually sufficient in the majority of cases.

Diseases Caused by Insects and Other Pathogens

Insects and illnesses are rarely a problem when growing Agastache. It’s not uncommon for thrips and whiteflies to show up in the field, causing only modest crop damage. Growers are more concerned about Pythium and Phytopthora. These infections can be avoided by planting the liners correctly and by using adequate irrigation procedures.. Botrytis, downy mildew, Heterosporium leaf spots, and rust are some diseases to look out for. Routine scouting activities can help growers identify these pests and illnesses.

Scheduling and Temperature

Taking care of Acapulco Deluxe’s flowering plants at any time of year is simple. Flowering does not necessitate vernalization. If your plants have been overwintered, you should avoid over-watering them and make sure they have enough protection from the winter elements. Flowering occurs regardless of the duration of the day. When agastache is grown in bright light, it will produce more flowers, have better coloring, and be of greater quality overall.

Temperatures above 60°F at night and 65°F during the day create the greatest grade plants. The amount of time it takes for a plant to grow varies depending on the temperature and the size of the container. It takes six to seven weeks to grow 4-inch pots into marketable size, whereas 6-inch pots take nine to 10 weeks to flower at these temps


Henry F. Michell’s Co. sells the agastache Acapulco Deluxe line (www.michells.com). They carry cuttings from Oro Farms and Innova Plant. In addition to Gro’N Sell, James Greenhouse, Meadow View Growers, Pell Greenhouses Inc., and Hardy Starts (www.hardystarts.com), you can get rooted liners from these companies: Gro’N Sell James Greenhouse Meadow View Growers, Pell Greenhouses Inc. (www.hardystarts.com).


Grow more hyssop plants in the greenhouse, whether for your garden or business, to ensure a high level of productivity. The ability to grow agastache from seed, cuttings, or divisions is one of the numerous benefits of becoming familiar with propagation techniques.

If you start your agastache seeds indoors, they will bloom more quickly than if you start them outside. When you grow plants indoors, you can expect a greater germination rate. The greenhouse can also be used for propagating cuttings and divisions of your favorite agastache plants.

Agastache cuttings and divisions can be propagated in the same way as any other plant. When the plant begins to produce new growth, take cuttings or divide it and keep it wet until the cuttings root and become established. However, it is important to keep in mind the type of agastache you have, as it may require an unique propagation method to grow.