The Little Adder Agastache, otherwise known as the Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 or Korean Mint ‘Golden Jubilee’, Agastache foeniculum ‘Golden Jubilee’, Agastache rugosa ‘Golden Anniversary’, is a rather well known perennial plant by gardening enthusiasts around the world.
Best known for its low maintenance and fast growth, this perennial will likely liven up your house (or garden) with its green colored leaves. But, only if you learn how to take proper care of it for it to thrive.
Fortunately, this is exactly what we’ll cover in this Little Adder Agastache Care Guide. So let’s dive in.
In order to take proper care of your Little Adder Agastache you’ll need to keep in mind the following guidelines:
- Water: The Little Adder Agastache wants regular watering to enhance fruit production but as a landscape plant, too much water will be a problem.
- Light: Keep your Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 in an environment where it can receive full sun on a daily basis.
- Soil: Make sure to keep the Little Adder Agastache in soil with moist but well-draining to well draining properties, so ideally, one that is made of clay, loam, chalk, and sand.
And as with many other plants, these are the only three care factors you need to remember to make sure your Little Adder Agastache is, for the most part, healthy and well to survive.

Scientific / Botanical Aspects
In botanical terms, the Little Adder Agastache belongs to the Lamiaceae family, the genus Agastache and the species Rugosa, hence its scientific (or botanical) name Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 (ah-gas-TAH-kee rew-GOH-suh).
As with other Agastache’s, the Little Adder Agastache is a herbaceous plant, which means it will die back to the ground every year.
Growing Region
The Little Adder Agastache is a plant native to the East Asia.
Knowing your plant’s native region is very useful, as it can give you tips on which environment is best for your Little Adder Agastache. If you keep it in mind, you can try to replicate these conditions at home, and you’ll likely end with a healthier plant.
With this in mind, the Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 will be most used to climate zones that fall between the range of 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A3.
Growth and Size
Growth
In terms of size and growth, the Little Adder Agastache is a relatively fast grower, which makes things tricky for any plant enthusiast.
Size
But, how big does the Little Adder Agastache actually get? What should you expect in terms of size? Let’s dive right in…
The Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 can grow up to 2′ – 3′ (60cm – 90cm) in 2′ – 3′ (60cm – 90cm) and 1′ – 2′ (30cm – 60cm) in 1′ – 2′ (30cm – 60cm).
These dimensions make the Little Adder Agastache a relatively medium perennial compared to others, so it’s best to keep this fact in mind since it will affect where you want to keep yours at home.
This is why experts recommend keeping an area of approximately 18″ – 24″ (45cm – 60cm) free so the Little Adder Agastache can spread to its best extent.
Water
In terms of watering, the Little Adder Agastache is a fairly complicated plant to take care of.
This is mostly because it has a not so straightforward watering schedule and somewhat regular watering needs.
Specifically, most experts agree that the Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 wants regular watering to enhance fruit production but as a landscape plant, too much water will be a problem.
Which is why it is considered a plant with relatively average needs in terms of water.

Watering
As a rule of thumb, you should remember to keep your Little Adder Agastache in soil with moist but well-draining to well draining characteristics, as these will guarantee the right conditions for your plant to grow and thrive.
When you consider this, this is why you should aim to choose soil that has good drainage, moist, and occasionally dry properties to keep the right moisture levels at all times.
However, in our experience, the best solution to knowing the right amount of water for your Little Adder Agastache is with the ‘thumb’ technique. Basically, you insert your finger into the soil, and based if you feel the soil moist or dry, you determine if it needs any water, which is the most appropriate way to go about watering your leafy friend.
Soil Mix
As mentioned earlier, the Little Adder Agastache prefers to have soil with good drainage, moist, and occasionally dry properties at all times, reason why you need to make the soil mix out of clay, loam, chalk, and sand.
This is why most experts agree that the Little Adder Agastache requires soil with clay, loam (silt), and sand, which will give you the right conditions it needs.
In addition to this, expert gardeners recommend having preferably alkaline, acid or neutral soil.
Light and Exposure
In terms of light & exposure, the Little Adder Agastache requires full sun in order for it to thrive under the right conditions.
Most experts agree that this perennial will do well as long as you keep it in partial to full sun, and it will be able to grow properly.
Specifically, we recommend that you place your Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 in full and direct sun (more than 6 hours of direct sunlight per day).
Season
Being a herbaceous plant, the Little Adder Agastache will die back to the ground every year.
But, you can expect it to have its ‘prime-time’ during the summer (mid, late), and during the fall.
Flowers
You can expect your Little Adder Agastache to flower around the summer and in the fall months from July to September (summer), and from October to December (fall).
In particular, this perennial is well known for its long bloom season, flowers for cutting and showy flowers around the plant enthusiast community.
The Little Adder Agastache produces some beautiful purple, or purple/lavender flowers around this time of year.
Foliage
The leaves from the Little Adder Agastache have a beautiful green color during most of the year.
In particular, they have a simple arrangement with a opposite organization in its leaves.

Attracts, Tolerance and Resistance
The Little Adder Agastache is well known for being able to attract butterflies and birds, so keep that in mind when choosing your plant, as you’ll likely end up finding one or another in your garden.
Additionally, it has a special tolerance for drought and animals like deer, so don’t worry if any of these come along, your Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 will be fine.
Garden
Does your Little Adder Agastache have any garden recommendations? Does it serve any gardening purposes? Here’s how you can get the most out of your new plant.
Most Agastache Rugosa ‘Little Adder’ Plant Patent #26,514 owners agree that this perennial will look great in most mediterranean, cottage and rustic gardens of all types.
Other owners consider that they complement well most gardens of informal and cottage, city and courtyard, and in prairie and meadow styles.
In particular, the Little Adder Agastache’s best location within your garden is in beds and borders, and in patio and containers, others use it for landscaping in a container, rock garden, border, cutting garden, or a woodland garden.
Companion Plants
Little Adder Agastache’s do well with some other plants beside it. One good companion plant is the Gaillardia, which will pair up nicely with your leafy friend.
Others consider that a nice Rudbeckia will work well too, so choose whichever you find works best for you!
Conclusion
Even though we covered a lot of care information for your Little Adder Agastache, remember the basics: sunlight, soil and water, as these should be enough to grow a healthy plant at home.