Agastache Care Guide: Growing Hummingbird Mint Plant

Agastache plant care guide

Flower Color
Blue, pink, white, purple, red, and orange
Plant Type
Perennial herbaceous
Scientific Name
Agastache rupestris, Agastache foeniculum
Common Name
Giant hyssop, hummingbird mint, licorice mint
Plant Size
3 to 5 feet tall
Full sun
well-drained, slightly acidic
Flowering Time
Hardiness Zone
3-10 (variety dependent)
Agastache-Agastache rupestris-Agastache foeniculum-Giant hyssop-hummingbird mint-licorice mint

Propagate | Soil | Light | Water | Temperature | Humidity | Potting | Pruning | Fertilize | Pest Control | FAQs

The Agastache plant, also known as hummingbird mint, is a beautiful and versatile plant native to eastern Asia. With its tall stems and vibrant flowers, this plant has become a favorite among gardeners worldwide. It can be grown indoors or outdoors, making it an ideal addition to any garden or home.

The Agastache plant is known for its distinctive foliage, which features broad leaves serrated along the edges. It produces tall flowers in various colors, including yellow, pink, purple, and blue. The flowers bloom throughout the summer and attract pollinators, including hummingbirds and butterflies.

In addition to its beautiful flowers, the Agastache plant is also prized for its hardiness and resilience. It can thrive in various conditions, from dry, desert-like environments to moist, shady forests. Because of this adaptability, it has become a popular choice among gardeners and landscapers looking for a low-maintenance plant that requires minimal care.

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The Agastache is the perfect choice if you are looking for a beautiful and versatile plant for your garden. Its stunning flowers and hardy nature make it an excellent addition to any landscape. This article will answer all common questions about growing, caring for, and maintaining Agastache plants.

Do Agastache flower? What color is the Agastache flower?

Yes, Agastache plants do produce beautiful flowers in various colors, including yellow, pink, purple, and blue. The flowers bloom throughout summer and attract pollinators to your garden, including hummingbirds and butterflies.

When to plant Agastache plant?

Agastache plants can be planted at any time of year as long as they are in a suitable growing environment. They tend to thrive best in areas with full sun, but they can also grow well in shadier locations. If you want to plant Agastache in the spring or fall, it is recommended to wait until after the last frost has passed.

Types of Agastache: what are the recommended varieties of Agastache plants?

There are many varieties of Agastache plants, each with unique characteristics. Some popular varieties include

  • Blue Boa: A large Agastache plant with vibrant blue flowers.
  • Coronado red: A compact, shrub-like variety of Agastache with pink flowers.
  • Tango: A perennial Agastache with bright orange flowers.
  • Golden Jubilee: An early-flowering variety of Agastache with yellow flowers.
  • Giant Hyssop: This is a large Agastache plant with lavender flowers.
  • Hummingbird Mint: This tall, upright Agastache plant with magenta-colored flowers.

Agastache soil requirements: What is the best soil for the Agastache plants?

The Agastache plant generally prefers well-drained soil that is rich in nutrients. It can tolerate various soil types, including sandy, clay, and loamy soils. However, it does best in slightly acidic soil rich in organic matter. To ensure optimal growth, add a slow-release fertilizer or compost to the soil planting your Agastache.

Use healthy soil free of pests and disease. Adding amendments and enhancers to the potting mix soil can help improve plant growth.

Agastache light requirements: How much light does Agastache plant need?

Agastache plants generally require plenty of sunlight to thrive. They tend to grow best in areas with full sun exposure, although they may also tolerate partial shade. Providing your Agastache plant with a minimum of 6 hours of direct sunlight per day is important. If your garden is shadier, using plant grow light with specific plant wavelengths can improve growth.

Agastache water requirements: How often to water the Agastache plant?

As with most plants, the best way to ensure optimal growth and health of your Agastache plant is to provide it with consistent moisture; the soil should be kept moist but not too soggy. This can be done by regularly checking the soil and providing the necessary water. Knowing any signs of drought stress, such as wilting or drooping leaves.

Although the Agastache plant is fairly drought-tolerant, it still requires regular watering to thrive. It would be best to provide your Agastache with a minimum of 1-2 inches of water per week. This can be done by either hand watering or drip irrigation system.

The frequency of watering depends on the season and environment where the plants are grown. Choose an irrigation system that suits the need of your plant.

Agastache temperature range: What temperature can Agastache tolerate?

The ideal temperature for the Agastache plant is between 60-70 degrees F. This is a fairly wide range, and keeping your Agastache plant in an environment that allows for consistent growth will be important. If the temperature drops below this range, you may need to bring in a heater or create other measures to keep your plants warm.

If the temperature gets too high, this can also cause stress on your plants. It is important to ensure that your garden stays cool and shaded in hot weather and provides adequate water to prevent wilting.

Take action to protect plants during bad weather. If it is too cold, using greenhousecold frame, and plant protective covers can help protect your plant and keep it healthy and happy year-round.

Agastache humidity: Do Agastache like humidity?

Several products help to maintain the humidity of plants around your Agastache, including plant misters, plant pots with built-in reservoirs, and even grow lights that help provide a source of moisture.

Where to buy Agastache plant?

Agastache plants can be found at many garden centers and nurseries. Or order them online. Always look over the roots while purchasing your plant, avoiding signs of rot or decay. You can research to find reputable sellers with high-quality planting materials beforehand to find high-quality planting materials.

Agastache plant propagation: How to propagate Agastache plant?

Propagating plants is the process of creating new plants from old stock plants or mother plants. It is a great way to propagate your plants and save money by producing new plants for free. There are several ways to propagate Agastache, including by seed, cuttings, and division.

Propagate Agastache plant from seed

Agastache can be propagated from seed. Start by harvesting the seeds from the plant when they are mature and dry, then sow them directly in your garden or a pot. This will help ensure that the resulting plants are true to the parent, and you can also save and sow fresh seeds every year.

To start, sow the seeds in a well-drained, sunny spot and water regularly. Keep the soil moist but not soggy, and be careful not to over-water, as this can cause the seeds to rot or become stunted.

You can also use a cold frame or greenhouse to help germinate your seeds. This will create an ideal environment for the growth of new plants and allows you to gain control over temperature and moisture.

Propagating Agastache plant by cutting

Agastache can also be propagated by cutting. Start by snipping off a healthy plant and placing it in water to allow the root system to grow. Once the roots reach a good size, you can transplant the cutting into the soil.

Using sterilized, disease-free potting soil to maintain healthy plants and prevent disease. You can also add a bit of rooting hormone to the cut end of the plant to help stimulate new growth.

Some gardeners also use a rooting hormone powder or gel when propagating Agastache. This will help ensure the cuttings take root and grow, especially in drier conditions.

Propagating Agastache plant by division

Agastache can also be propagated by division. This separates a large, mature plant into several smaller plants. This can be done any time of the year as long as you keep the newly-separated plants in a cool and shaded spot to allow them time to grow.

To start, dig around the base of the plant with a shovel and gently separate it into smaller sections. Keep the root system intact, as this is the source of all new growth.

If the plant has a lot of roots, you may also want to cut it into smaller sections. You can then replant these sections and care for them like any other new plant.

When done properly, these methods of propagating Amazonian elephant’s ear plants are quick and effective ways to produce new plants from old ones. Make sure you choose the right time of year, and always start with good quality and healthy planting materials.

Potting Agastache plant

Agastache plants are hardy herbaceous perennials that are easy to care for and can thrive in various climates. One important thing to consider when potting an Agastache plant is that it requires a lot of sunlight to thrive.

The optimal location for your Agastache plant is a sunny window or exposure, where it will receive at least 6 hours of direct light daily. If you don’t have a spot that gets this much sun, consider using grow lights or a plant light to provide the extra light that your Agastache needs.

You should also use high-quality potting soil when planting your Agastache. This will help ensure that the plant has all the nutrients and moisture needed to thrive. It is also important to ensure you water regularly, but be careful not to over-water, as this can cause the soil to become too heavy and compact.

It is important to select the correct pot size or container for your Agastache ear plant, as the container’s size will significantly impact its growth and overall health. For best results, look for a container with ample drainage holes at the bottom and deep enough to accommodate the full size of your plant’s root system.

How to prune Agastache plant?

Pruning is an essential part of gardening, as it helps to maintain the health and shape of your plants. There are various pruning tools on the market, including pruners, loppers, saws, and pruning shears. This will help you avoid damaging the plant and reduce the risk of disease or pests.

When pruning Agastache, it is important to keep in mind that the plant benefits from lots of airflow and light. This means that you should prune the plant regularly and only remove a few leaves or stems at a time. You should also pay attention to the plant’s overall shape and avoid cutting back too many stems at once.

Finally, it is important to clean your pruning tools after each use. This will help prevent the spread of disease and other pests and reduce cross-contamination between different plants.

How to fertilize Agastache plant?

Choose a high-quality, organic fertilizer specifically formulated for herbs or flowering plants to fertilize your Agastache plant. Feeding your Agastache plant regularly, particularly during the spring and summer growing seasons, is best.

To start, water your Agastache plant well before applying fertilizer. This will help to loosen up the soil and ensure that the plant can easily absorb the nutrients. Then, sprinkle a small amount of fertilizer around the base of the plant, taking care to stay within the recommended dosage or over-fertilize.

You should also be mindful of the type of soil that your plant is growing in, as this can affect how the fertilizer is absorbed. For the best results, apply a liquid fertilizer or foliar spray to your plant, as this will allow the nutrients to be directly absorbed by the leaves rather than the soil.

Overall, fertilizing your Agastache plant regularly will help keep it healthy and promote its growth. Be sure to follow the dosage recommendations carefully and look for any signs of nutrient deficiencies or toxicity.

Choose a high-quality fertilizer with a balanced NPK (nitrogen, phosphorus, and potassium) ratio to fertilize your Agastache. Some of the plants also benefit by adding appropriate soil amendments.

Common Agastache diseases and how to manage Agastache disease?

Agastache plant is prone to a few common pests and diseases, including:

Powdery mildew: This fungal disease can cause the leaves of your Agastache plant to turn white or gray, eventually leading to leaf loss. To manage powdery mildew, start by pruning away any infected leaves and disposing of them in an outdoor trash can. You should also ensure to time your fertilizer and water applications carefully, as over-fertilization and over-watering can make the plant more susceptible to disease.

Spider mites: These tiny pests can cause the leaves of your Agastache plant to turn yellow and appear dry or curled. To manage spider mites, try pruning away infected leaves and spraying the plant with a high-pressure stream of water to remove any lingering pests. To kill any remaining mites, you may also want to apply an organic insecticide or miticide, such as neem oil or horticultural soap.

Fusarium wilt: This fungal disease can cause your Agastache plant to develop wilted, brownish leaves. To manage fusarium wilt, start by avoiding overhead watering, as this can help to promote the spread of fungal spores. After each use, you should remove any infected plant debris and disinfect your pruning tools. Finally, you can apply a fungicide to help prevent the spread of fusarium wilt and work to promote good air circulation around your plant.

Taking good care of your Agastache plant is key to keeping it healthy and free from pests and diseases. Make sure you are watering your plant regularly, providing it with plenty of sunlight, and monitoring for signs of stress or damage. Additionally, practice good garden hygiene by removing any diseased leaves or debris, and take advantage of natural pest control methods whenever possible. Use good quality insecticides and fungicides if there is an outbreak of disease or pests. Please follow the instructions carefully to avoid any potential plant harm.

Takeaway on how to grow and care for Agastache

Agastache, also known as hyssop or hummingbird mint, is a beautiful and versatile plant grown in gardens and other outdoor spaces. To successfully grow and care for Agastache, it is important to maintain good garden hygiene by removing any diseased leaves or debris, providing regular watering and sunlight, and promoting good air circulation around the plant. Additionally, you can apply a high-quality fertilizer or foliar spray to help promote healthy growth and use natural pest control methods whenever possible. You can enjoy a beautiful Agastache plant free from pests and disease with proper care and attention.

Explore our plant grow and care guides collection to add more plants to your garden.

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Happy gardening !


What is Agastache?

Agastache, also known as hyssop or hummingbird mint, is a versatile plant grown in gardens and other outdoor spaces. It is known for its attractive flowers and foliage and its ability to attract pollinators like bees and butterflies.

Where to put Agastache?

Agastache can be planted in full sun or shade, and it does best in well-drained soil rich in organic matter. Some good growing locations for Agastache include flower beds, herb gardens, and containers.

How often should Agastache be watered?

Agastache should be watered regularly, especially during the hot summer when it is actively growing. You may also want to apply a high-quality fertilizer or foliar spray to help promote healthy growth.

How to get Agastache to bloom?

To encourage Agastache to bloom, ensure you provide it with plenty of sunlight and regular watering. Prune any dead or damaged branches, and avoid using harsh chemical pesticides or fertilizers. With a little bit of care and attention, you should be able to enjoy beautiful blooms on your Agastache plant.

Does Agastache plant like sun or shade?

Agastache can be planted in both full sun and partial shade, although it does best in areas with plenty of sunlight throughout the day. For optimal growth and flowering, it is important to provide your Agastache plant with plenty of sunlight and regular watering.

Is the Agastache plant annual or perennial?

The Agastache plant can be grown as a perennial in many temperate climates, although it is often treated as an annual in colder areas or areas with severe winters. To ensure the health and longevity of your Agastache plant, provide it with appropriate growing conditions and prune any damaged or dead branches as needed.

Does the Agastache plant come back every year?

The Agastache plant typically grows annually in colder areas, although it can be treated as a perennial in mild or temperate climates. Your Agastache plant should return every year with proper care and attention and provide beautiful flowers and foliage.

Are Agastache plants toxic to cats?

The Agastache plant may contain toxic compounds to cats and can cause irritation, harm, or death in felines. If you have cats in your home or garden, it is important to take care when planting Agastache and remove any plant debris or droppings as soon as possible. You may also want to keep cats away from your Agastache plants or consider planting them in containers where they will be less likely to come into contact with the plant.

Are Agastache plants toxic to dogs?

Like cats, dogs can be sensitive to compounds in the Agastache plant. If your dog has consumed any part of this plant, Way out in the country, you may want to plant some Agastache plants as a way to attract pollinators. However, keep your dogs away from the plants and watch for any signs of irritation or illness. If you notice any symptoms, seek veterinary care as soon as possible.

Are Agastache plants toxic to pets?

The Agastache plant may contain toxic compounds for pets like cats and dogs. Suppose your pet has come into contact with this plant. In that case, you may notice signs of illness or irritation, such as vomiting, diarrhea, difficulty breathing, or fluid accumulation in the chest and abdomen. If you suspect your pet has come into contact with an Agastache plant, seek medical attention as soon as possible.

How cold can Agastache plants tolerate?

The Agastache plant can tolerate cold temperatures down to about -20 degrees Fahrenheit, making it a good choice for gardeners in cooler climates. However, it may not be suitable for areas with extremely harsh winters or other extreme growing conditions. To ensure the health and longevity of your Agastache plant, choose an appropriate growing location and provide it with regular watering and adequate protection from the cold.

How often would you like to water the Agastache plant?

The Agastache plant requires regular watering to thrive and produce beautiful blooms. Depending on the climate, soil type, and other growing conditions, you may need to water your Agastache plant once or twice weekly. Check the soil regularly and avoid over-watering, which can cause root rot and other serious issues.

When to stop watering the Agastache plant?

The Agastache plant can be sensitive to overwatering, which can lead to root rot and other issues. As a general rule, you should stop watering your Agastache plant once it has matured and produced beautiful blooms. This will vary depending on your garden, so please be sure to monitor the plant closely and adjust your watering routine as needed.

When to fertilize Agastache plant?

To encourage healthy growth and abundant blooms, you should fertilize your Agastache plant regularly. This is typically best done during the growing season, starting early spring and continuing through the summer. You can use a high-quality organic fertilizer or a specialized Agastache plant food, depending on your preferences and plant needs.


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Written by: Marissa Pequigney

Hello, my name is Marissa and I have loved plants for all of my life. I am very excited to teach my local community of nature lovers how to take care of a variety of plants from all over the world.

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