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Hardy perennial
Lamiaceae
Perennials
Agastache 'Purple'
Giant Hyssop
Agastache 'Purple': 45 cm high and 30 cm spread, full sun exposure. Violet flowers in June-September. Zone 4; choose soil compatible with its moisture needs.
- Exposure
- Sun
- Life cycle
- Hardy perennial
- Hardiness
- Zone 4
Discover the plant
Common nameAgastache 'Purple'
FamilyLamiaceae
GenusGiant Hyssop
CultivarViolet
TypeHardy perennial
Botanical nameGiant Hyssop
Agastache ‘Purple’ (Agastache ‘Purple’) brings a palette of purple to the garden. The foliage offers shades of green, which can be highlighted among different textures. The usual flowering period is June-September. At maturity, expect 45 cm in height and 30 cm in width, which suggests its use in the middle of flowerbeds and in group plantings.
To plant Agastache ‘Purple’, look for the following exposure: full sun and suitable soil (well-drained, rather light; avoid water pockets around the crown). After planting Agastache ‘Purple’, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize drainage, especially during mild spells. Spacing of approximately 30 cm between centers serves as a starting point, to be adjusted according to observed vigor. The indicated hardiness level is zone 4, to be assessed according to your garden's conditions.
In a planting of Agastache ‘Purple’, wait to see new spring growth before removing parts that dried out during winter. Winter drainage is crucial for this agastache; avoid depressions where water accumulates during mild spells. For companion planting, consider upright sedums, catmints, and yarrows in varieties with similar needs. The flowering (June-September) and spread of 30 cm will serve as a guide for distributing other plants around this plant.
Planting guide
From planting to establishment.
Spacing / density
30 cm
Best planting time
Preferably in spring, in warm and workable soil, with regular watering during establishment.
Propagation
Division of clumps; stem cuttings. Sowing does not guarantee the fidelity of a named cultivar.
Growing method
Agastache 'Purple': Ideally in spring, in warm, workable soil, with regular watering during establishment. After planting Agastache 'Purple', water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize good drainage, especially during thaws. Winter drainage is crucial for this agastache; avoid depressions where water accumulates during thaws.
Soil and care
The right care,at the right time.
Soil pH
Acid to neutral; general botanical group indication
Care level
Easy
Drought tolerance
Yes
Watering
After planting Agastache ‘Purple’, water enough to thoroughly moisten the root ball. Once rooted, allow the surface to dry between waterings and prioritize drainage, especially during mild spells.
Soil type
Well-draining, rather light; avoid water pockets around the collar
Fertilization
Fertilizer for flowering
Moisture
Low to moderate after establishment; priority drainage
Seasonal care
Agastache 'Purple': wait to see new growth in spring before removing parts that dried out over winter. During its flowering period (June-September), also monitor for damaged stems and neighboring plants that might overshadow the clump.
Container growing
A garden,within reach.
Recommended pot size
Stable and perforated container, noticeably wider than the root ball; size to be adapted to the format sold and adult development.
To try Agastache 'Purple' in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (30 cm). Water should drain freely after each watering; check the root ball more often than you would for plants in the ground. Plan for winter protection for the container depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
18 inches (45.5 cm)
Width / spread
14 inches (35.5 cm)
Flower color
Purple
Foliage color
Green
Foliage type
Null and void
Growth rate
Moderate
Growth habit
Bushy
Fragrance
Not documented for this selection
Bloom period
June-September
Garden associations
In goodcompany.
Companion plants
Suggested plant companions for Agastache 'Purple': upright sedums, catmints, yarrows. Choose varieties that thrive in similar sun and moisture conditions; ensure each plant has adequate space to reach its mature size.
Plants to avoid
Around Agastache 'Purple', avoid especially neighboring plants that would cover its leaves or strongly compete with its root ball. Compatibility of light, water, and spread takes precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant Agastache 'Purple'?
Expect sun and suitable soil (draining, rather light; avoid water pockets around the collar). Winter drainage is crucial for this agastache; avoid depressions where water accumulates during thaws.
What space should I reserve for Agastache 'Purple'?
Expect a height of about 45 cm and a width of 30 cm at maturity. Approximately 30 cm between centers, to be adjusted based on the actual development of the clump. This size is suitable for use in the middle of a border and for group planting.
When does Agastache 'Purple' bloom?
The indicated period is June-September. The flower color is purple. The exact date and duration depend on the climate, season, and plant establishment.
How to water and care for Agastache ‘Purple’?
After planting Agastache ‘Purple’, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry out between waterings and prioritize drainage, especially during warm spells. Wait to see spring growth before removing any parts that have dried out over winter.
Can Agastache 'Purple' be grown in a pot?
To try Agastache 'Purple' in a container, choose a stable pot with drainage holes, suited to the root ball and its future size (30 cm). Water must drain freely after each watering; check the root ball more often than you would for plants in the ground. Plan to protect the container in winter depending on your climate.
Wildlife and pets
Life,around your plants.
Supporting wildlife
The flowering of Agastache ‘Purple’ attracts pollinating insects. To maintain these visits from June to September, avoid treating open flowers and ensure a succession of blooms around the plant.
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