Sunset Hyssop Agastache rupestris
ABOUT
The common name for Agastache rupestris is Sunset Hyssop or Licorice Mint. This plant features a striking visual profile. It has narrow, elongated leaves that exhibit a gray-green hue, which gives it a somewhat silvery appearance. The texture of the foliage is slightly rough with fine hairs, which can make the leaves feel somewhat fuzzy to the touch. Sunset Hyssop is perhaps best known for its vivid flowers. The flower spikes stand out with their tubular blossoms that come in a blend of colors—typically, warm shades of orange, pink, and purple, reminiscent of a desert sunset. These vibrant blossoms are arranged in dense, terminal spikes at the top of the stems and are a magnet for pollinators like hummingbirds and bees. Adding to the allure of the plant is its aromatic nature. When the leaves are crushed or brushed against, they release a delightful scent that has notes of licorice and mint, hence one of its common names, Licorice Mint. This combination of visual beauty and fragrance makes Sunset Hyssop a favorite in gardens where it's used for both ornamental and sensory appeal.
About this plant
NamesSynonyms
Sunset Hyssop, Licorice Mint, Threadleaf Giant Hyssop, Rock Anise Hyssop, Licorice Root.
Common names
Agastache rupestris
ToxicityTo humans
The plant known as Sunset Hyssop is not commonly known to be toxic to humans. There are no well-documented cases of poisoning or adverse effects from ingesting the plant. However, as with any plant, individual allergies or sensitivities can occur, so it's always wise to exercise caution with plants that are unfamiliar.
To pets
Sunset Hyssop is also not known to be toxic to pets. No symptoms of poisoning or significant health concerns have been commonly reported for domestic animals consuming this plant. As with humans, pets may have individual sensitivities, so monitoring for any unusual reactions when a pet ingests any part of an unfamiliar plant is prudent.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Orange
Height
2-3 feet (0.6-0.9 meters)
Spread
1-2 feet (0.3-0.6 meters)
Plant type
Herb
Hardiness zones
5
Native area
North America
Benefits
General Benefits- Attracts pollinators: Agastache rupestris, commonly known as Licorice Mint, is highly attractive to bees, butterflies, and hummingbirds, promoting pollination in the garden.
- Drought tolerant: This plant is well-suited for xeriscaping and water-wise gardening, as it requires minimal water once established.
- Deer resistant: Licorice Mint is generally not favored by deer, making it a good choice for gardens in areas with high deer populations.
- Aromatic foliage: The leaves of Agastache rupestris release a pleasant fragrance when brushed or crushed, which can enhance the sensory experience of a garden.
- Ornamental value: The showy, tubular flowers and silvery-green foliage make it an attractive addition to ornamental gardens and landscapes.
- Culinary uses: The leaves and flowers are edible and can be used to flavor salads, drinks, and other dishes, although this is not a primary feature of the plant.
- Long blooming period: Licorice Mint has a long flowering season, providing color and interest in the garden from mid-summer to fall.
- Easy to grow: It is relatively low maintenance and easy to cultivate, which is ideal for beginner gardeners and those looking for low-care landscaping options.
- Suitable for containers: This plant is adaptable and can be grown in containers, making it a versatile choice for patios, balconies, and smaller spaces.
Medical Properties- Agastache rupestris is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Agastache rupestris, commonly known as Apache Sunset Hyssop, can be used in potpourri for its fragrant leaves and flowers, contributing a sweet, anise-like aroma.
- The colorful flowers of Apache Sunset Hyssop can be used as a natural dye source for fabrics, providing hues ranging from soft yellows to greens depending on the mordant used.
- The plant's tall and striking flower spikes can add a vertical dimension in floral arrangements, either fresh or dried, for a rustic and natural aesthetic.
- Leaves of the Apache Sunset Hyssop can be infused in oils to create fragrant, herbal-infused oils for use in homemade cosmetics or candles.
- The nectar-rich flowers can be incorporated into gardens designed to attract and support pollinators like bees, butterflies, and hummingbirds.
- Apache Sunset Hyssop can be planted as a border or edging plant in a garden due to its clumping growth habit and colorful appearance.
- Cut stems of the Apache Sunset Hyssop can be hung in wardrobes or drawers to impart a mild, pleasant scent to clothes and linens.
- The dried seeds of the plant can be used in craft projects, such as creating natural, homemade jewelry or decorative art pieces.
- When planted alongside vegetable gardens, Apache Sunset Hyssop can serve as a companion plant, potentially deterring some pests with its strong scent.
- The plant can also be featured in educational settings such as school gardens, to teach students about plant biology and the importance of native flora in ecosystem support.
Interesting Facts
Feng ShuiThe Sunset Hyssop is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Sunset Hyssop is not used in astrology practice.
Plant Symbolism- Attraction of hummingbirds and butterflies – Agastache rupestris, commonly known as the Sunset Hyssop, is known for its ability to attract pollinators like hummingbirds and butterflies, making it a symbol for allure and magnetism.
- Resilience and adaptation - This plant thrives in rocky, arid environments, symbolizing the ability to adapt and persevere in challenging conditions.
- Healing and medicinal properties – Traditionally, various Agastache species have been used in herbal medicine, symbolizing health and healing.
- Fragrance and aromatherapy – The Sunset Hyssop is notable for its aromatic leaves and flowers, making it a symbol for relaxation and therapeutic properties.
- Beauty in harsh environments – With its striking flowers and pleasant scent, it represents the idea of finding and creating beauty even in tough situations.
WaterThe Sunset Hyssop should be watered deeply but infrequently to mimic its natural arid habitat. Aim to provide about 1 inch of water once a week during the growing season, reducing the frequency as the plant becomes established. During the hotter, drier months, it may be necessary to water more often, but always check the soil moisture before watering. Overhead watering is discouraged to prevent mildew; instead, water at the base of the plant to keep the leaves dry. Generally, an established Sunset Hyssop may only need watering every two to three weeks, with a preference for less frequent but more thorough waterings, amounting to approximately one to two gallons per month depending on climate conditions.
LightThe Sunset Hyssop thrives best in full sun conditions, which means it requires at least six hours of direct sunlight each day. It can tolerate partial shade, but for optimal growth and flowering, a location that offers full, unfiltered sun is preferable. Avoid deeply shaded areas, as this will hinder its ability to produce the vibrant flowers for which it is known.
TemperatureSunset Hyssop prefers warm temperatures and does well in environments that don't experience extreme cold. The ideal temperature range for this plant is between 50°F and 90°F. It can tolerate temperatures down to about 20°F but may not survive prolonged periods of cold below this point. The plant benefits from warmer daytime temperatures and cooler nights, within the mentioned ideal temperature range.
PruningPrune the Sunset Hyssop in late winter or early spring before new growth begins. This helps maintain an attractive shape, encourage bushy growth, and remove any dead or damaged stems. Pruning can also be done after the first bloom to promote a second flowering period. Generally, the plant benefits from being pruned back by about one-third of its size annually or whenever it appears overgrown.
CleaningAs needed
SoilThe best soil mix for the Sunset Hyssop is well-draining, with a lean composition, such as a blend of sandy loam, perlite, and compost. A soil pH between 6.5 and 7.5 is ideal for this plant. You can achieve this by mixing two parts of sand with one part garden soil and one part compost or well-rotted manure.
RepottingSunset Hyssop typically does not require frequent repotting. It can be repotted every 2 to 3 years or when it outgrows its current pot. Ensure that the new pot has good drainage to prevent waterlogging.
Humidity & MistingSunset Hyssop prefers moderate to low humidity levels and is quite tolerant of drier air, making it well-suited for typical indoor environments. Avoid placing it in overly humid conditions to prevent mold and mildew development.
Suitable locationsIndoor
Ensure full sun, well-draining soil, and infrequent watering.
Outdoor
Plant in full sun, well-drained soil, water sparingly.
Hardiness zone
5-10 USDA
Life cycleAgastache rupestris, commonly known as the Licorice Mint or Sunset Hyssop, begins its life cycle as a seed, which germinates with adequate moisture and temperature in spring. Upon germination, it develops a tiny set of initial leaves (cotyledons), and soon after, true leaves appear as it establishes itself into a young seedling. As the plant matures, it grows into a flowering perennial, producing tall spikes with vibrant flowers that are highly attractive to pollinators like bees and hummingbirds during the summer months. After pollination, these flowers subsequently produce seeds by late summer to early fall. Once the flowering is complete, and seeds are set, the plant dies back in winter, becoming dormant in colder climates. In the next growing season, the seeds may sprout to continue the lifecycle, or the plant may regenerate from its root system if conditions are suitable.
PropogationPropogation time
Spring to summer
The most popular method for propagating Agastache rupestris, commonly known as Sunset Hyssop or Licorice Mint, is through seed sowing. Seeds can be sown in spring after the last frost or in fall, as they require a cold period to break dormancy. To sow the seeds, simply scatter them on the surface of a well-drained soil mix and press them lightly into the soil, ensuring that they are not buried too deep, as they need light to germinate. Keep the soil consistently moist, but not waterlogged. Germination typically occurs within 1-4 weeks at temperatures around 70°F (21°C), and once the seedlings have grown large enough to handle, they can be transplanted to their final growing positions.
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