Agastache nepetoides (Yellow Giant Hyssop)
Yellow Giant Hyssop
An exclamation mark in the landscape throughout the winter, Agastache nepetoides (Yellow Giant Hyssop) is a tall herbaceous perennial boasting vertical spikes, 4-16 in. long (10-40 cm), packed with tiny, pale yellow flowers. Blooming for about 1-2 months from mid-summer to fall, they are borne atop stiff, square stems and attract bees, butterflies, and other beneficial pollinators. The tiny flowers are not particularly showy because only a few of them are in bloom at the same time. The beauty of Yellow Giant Hyssop consists primarily of its foliage of toothed, arrowhead-shaped, medium to dark green leaves. Unlike most mint family members, Yellow Giant Hyssop lacks their minty fragrance. The flowers give way to small seeds that will readily self-germinate in the spring. The root system of Yellow Giant Hyssop is fibrous and rhizomatous, allowing the plant to spread and form colonies without being aggressive.
- Grows up to 4-6 ft. tall (120-180 cm) and 1-3 ft. wide (30-90 cm).
- Thrives in average, medium moisture, well-drained soil in full sun to part shade. This plant dislikes dry sunny areas, which will cause the foliage to wilt during a summer drought.
- Provides a bold impact in borders, cottage gardens, butterfly gardens, or in prairie plantings.
- No serious pest or disease issues. Deer resistant.
- Native to the United States and Canada.
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Requirements
Hardiness | 2
– 8 |
---|---|
Plant Type | Perennials |
Plant Family | Agastache - Hyssops |
Exposure | Full Sun |
Season of Interest |
Summer (Mid,Late) Fall |
Height | 4' – 6' (120cm – 180cm) |
Spread | 1' – 3' (30cm – 90cm) |
Spacing | 24" – 36" (60cm – 90cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained, Well-Drained |
Characteristics | Showy |
Native Plants | United States, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Jersey, New York, Pennsylvania, Vermont, Southeast, Alabama, Arkansas, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Southwest, Oklahoma |
Tolerance | Deer |
Attracts | Bees, Butterflies |
Garden Uses | Beds and Borders |
Garden Styles | Informal and Cottage, Prairie and Meadow |
By JurateBuiviene, Shutterstock
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Requirements
Hardiness | 2
– 8 |
---|---|
Plant Type | Perennials |
Plant Family | Agastache - Hyssops |
Exposure | Full Sun |
Season of Interest |
Summer (Mid,Late) Fall |
Height | 4' – 6' (120cm – 180cm) |
Spread | 1' – 3' (30cm – 90cm) |
Spacing | 24" – 36" (60cm – 90cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained, Well-Drained |
Characteristics | Showy |
Native Plants | United States, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Jersey, New York, Pennsylvania, Vermont, Southeast, Alabama, Arkansas, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Southwest, Oklahoma |
Tolerance | Deer |
Attracts | Bees, Butterflies |
Garden Uses | Beds and Borders |
Garden Styles | Informal and Cottage, Prairie and Meadow |