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Agastache, Rose Mint

Short Description

Minty scent accents lavender-rose blooms and gray-green foliage.

Full Description

The free-flowering tall spikes are arrayed in lavender-rose blooms and fragrant, gray-green foliage with dark stems. It's terrific as cut flowers and a popular variety with hummingbirds.
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Order: 1 Pkt. (50 seeds)
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Product properties

Zone This refers to the USDA hardiness zone assigned to each part of the country, based on the minimum winter temperature that a region typically experiences. Hardiness zone ranges are provided for all perennial plants and you should always choose plants that fall within your range.


Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

24 inches

Spread The width of the plant at maturity.

10-14 inches

Bloom Season The time of the year when this product normally blooms.

Fall, Summer

Resistant To Adverse garden conditions, such as heat or frost, deer or rabbits, that this product can tolerate well.

Deer, Drought, Heat

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Introduction to Perennials
Introduction to Perennials
Perennials return year after year blooming on their own. Watch this introduction and discover how easy and rewarding growing perennials can be.
Watch video
Perennials Tour #1
Perennials Tour #1
Take a garden tour and see favorite perennial plants in a garden setting. In this video- Shasta Daisy, Ornamental Grass, Butterfly Bush, Echinacea and Hydrangea.
Watch video
  • Agastaches

    Start Indoors Start Indoors Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer
    Transplant Transplant When to transplant bulbs or roots in the garden for spring
    Start Outdoors Start Outdoors Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer
    Start Indoors Fall Start Indoors Fall Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall
    Transplant Fall Transplant Fall Transplant Fall-When to transplant bulbs or roots in the garden for fall
    Start Outdoors Fall Start Outdoors Fall Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall
    First Date: Mar-07 - Last Date: Mar-21
    First Date: Mar-28 - Last Date: May-16
    First Date: Jul-23 - Last Date: Aug-06

How to Sow and Plant Agastache

Agastache may be grown from seed sown early indoors and transplanted outside after frost, sown directly in the garden in summer, or grown from potted plants.

Sowing Agastache Seed Indoors:

  • Sow seeds indoors 6-8 weeks before last spring frost date.
  • Sow ¼ inch deep in seed-starting formula.
  • Keep the soil moist at 70-75 degrees F.
  • Seedlings emerge in 14-21 days.
  • As soon as seedlings emerge, provide plenty of light on a sunny windowsill or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Raise the lights as the plants grow taller. Incandescent bulbs will not work for this process because they will get too hot. Most plants require a dark period to grow, so do not leave lights on for 24 hours.
  • Agastache Seedlings do not need a lot of fertilizer, feed when they are 3-4 weeks old using a starter solution (half strength of a complete indoor houseplant food) according to manufacturer’s directions.
  • If you are growing in small cells, you may need to transplant the seedlings to 3 or 4 inch pots when seedlings have at least 2 pairs of true leaves before transplanting to the garden so they have enough room to develop strong roots.
  • Before moving to the garden, agastache seedling plants need to be “hardened off”. Accustom young agastache plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun at first. If frost threatens at night, cover or bring containers indoors, then take them out again in the morning. This hardening off process toughens the plant’s cell structure and reduces transplant shock and scalding.

Sowing Agastache Directly in the Garden:

  • Sow in full sun after danger of frost or in late summer 12 weeks before the ground freezes.
  • Remove weeds and work organic matter into the top 6-8 inches of soil; then level and smooth.
  • Sow seeds evenly and thinly and cover with ¼ inch of fine soil.
  • Firm lightly and keep evenly moist.
  • Seedlings will emerge in 14-21 days.
  • Thin to at least 16 inches apart when seedlings have three sets of leaves.

Planting Agastache in the Garden:

  • Select a location in full sun with good rich moist organic soil. Agastache requires a well-drained soil.
  • Prepare the bed by turning the soil under to a depth of 6-12, inches removing any debris, and lightly raking as level as possible.
  • The addition of organic matter (leaf mold, compost, well-rotted manure) benefits all gardens and is essential in recently constructed neighborhoods.
  • Plant outdoors on a cloudy day or in late afternoon to reduce transplant shock.
  • Dig a hole for each plant large enough to amply accommodate the root ball.
  • Unpot the agastache plant and gently loosen the root ball with your hands to encourage good root growth.
  • Place the top of the root ball even with the level of the surrounding soil. Fill with soil to the top of the root ball. Press soil down firmly with your hand.
  • Use the plant tag as a location marker.
  • Thoroughly water and apply a light mulch layer on top of the soil (1-2 inches) to conserve water and reduce weeds.

How to Grow Agastache

  • Agastache perennial flowersKeep weeds under control during the agastache growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their germination.
  • Mulches also help retain soil moisture and maintain even soil temperatures. For perennials, an organic mulch of aged bark or shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time.  Always keep mulches off a plant’s stems to prevent possible rot.
  • Careful watering is essential in getting perennials off to a good start. Water thoroughly at least once a week to help new roots grow down deeply. Soil should be damp at about 1 inch below the soil surface. You can check this by sticking your finger in the soil. Water early in the morning to give all leaves enough time to dry.  One inch of rain or watering per week is recommended for most perennial plants. You can check to see if you need to add water by using a rain gauge.
  • Until plants become established, protection from direct, hot sunlight and extreme winds may be necessary.  Good air movement is also important for agastache.
  • After new growth appears, a light fertilizer may be applied. Keep granular fertilizers away from the plant crown and foliage to avoid burn injury. Use low rates of a slow release fertilizer, as higher rates may encourage root rots.
  • “Deadhead”, remove spent flower heads to encourage continuous flowering and prevent seed development.
  • Remove and discard foliage after a hard frost in fall.
  • Agastache tends to be a short-lived perennial, but it will reseed where it is happy.

Agastache Growing Tips

  • Many gardeners do not cut back perennial flower seed heads in the fall, but wait until early spring before the new foliage appears. This provides food for wildlife over the winter.
  • For flower arranging, cut when blooms are 2/3 open.
  • Use anise-flavored leaves and flowers as a seasoning or to make a tea.

How to Plant & Grow Perennials

Full Sun
24 inches
10-14 inches
Bloom Season
Fall, Summer
Resistant To
Deer, Drought, Heat
Ornamental Use
Beds, Cut Flowers
Planting Time
Fall, Spring
Life Cycle
Agastache, Rose Mint is rated 2.4 out of 5 by 8.
Rated 1 out of 5 by from Horrible... bad batch of seeds! I bought these and only one grew. I am a certified usda organic farmer. I have acommercial grade greenhouse. I have grown many difficult plants in the past. Patchoulli, exotic tropicals, etc.. THese are the only seeds I have ever had problems with. I have to say that all the other seeds I have gotten from this company have grown beautifully. I think this may be a bad batch. I know mint can be tempermental when growing from seed instead of shoots. But, with my past experience I thought it wouldn't be a problem. I planted these in a container. Had them outside. Only one seed germinated. So disappointing as I was looking forward to this mint so dearly. I'm not sure if burpee offers the plants, but if they do.... buy those instead. It would be worth the extra money spent.
Date published: 2019-06-10
Rated 4 out of 5 by from Much better experience than other reviewers I started the seeds indoors and germination was prolific. I just transplanted about 20 seedlings outdoors and will wait to see what happens. All the baby agastache were sturdy and healthy, and did not seem to resent transplanting.
Date published: 2018-06-04
Rated 1 out of 5 by from Bad seeds Will not write a review. Just so you know not one seed grew.
Date published: 2017-07-18
Rated 1 out of 5 by from Only leaves, no growth I'm a amateur gardener. I can't blame the product or company for my lack of success. I'm learning. I only grew leaves. I planted them in the ground but they still aren't growing. Only 2 seeds germinated. Maybe they will bloom next year.
Date published: 2017-07-15
Rated 5 out of 5 by from Hearty seedling when planted outside This was my first attempt at growing from seeds and I now have 5 strong Agastache starts that we just planted in the ground. Very exciting for us! I just babied them and when it would downpour or it was going to be windy, I put them in a more protected area. After sunny and rainy days, they started growing and never stopped.
Date published: 2015-09-21
Rated 4 out of 5 by from Hardy, Pretty and Difficult to Start Seeding individually in cell packs indoors didn't work well. Most of the seeds germinated, but the seedlings were so delicate they died easily. So, I gave up and dumped 5-6 seeds into a small pot and left it outside. Sure enough, they all sprouted and grew in spite of substantial neglect and irregular watering. The plant survived winter on the deck with an occasional cover for freezing temperatures, and an unexpected hailstorm that decimated most of my plants barely harmed the Rose Mint. Earlier this spring, I transplanted it into the hottest, driest and sunniest spot in the garden. Right now, it's in full bloom and covered with butterflies. The deer have approached it several times and walked away every time without even taking a test bite. The tiny flowers are so delicate and pretty. They look beautiful mixed in with Mint Lemon and Anise Hyssop Blue. But for slow start, this is an excellent plant. It seems to adore being ignored and dehydrated, which is a huge plus during the summer.
Date published: 2015-05-06
Rated 1 out of 5 by from Rose Mint Agastache Terrible, not one seed came up
Date published: 2012-05-09
Rated 2 out of 5 by from so-so Only 6 germinated out of the entire pack of seeds. May have been a bad pack but that's pretty low regardless. All the other seeds I bought did as expected. I'll plant the ones I have in April and see how they do.
Date published: 2012-03-25
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