Giant hyssops (Agastache)

Giant hyssops

Giant hyssops are tall, aromatic flowering plants characteristic for their fragrant leaves, tall growth, and flower spikes that usually bear numerous smaller flowers in the form of clusters. Some species are planted because of their attractiveness to hummingbirds. In gardening, giant hyssops hybrids are primarily used instead of species plants because of their more striking flowers and stronger winter hardiness.

Scientific classification

Genus

Giant hyssops (Agastache)

Family

Mint

Order

Mints plantains olives and allies

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Perennial

Lifespan

2 m

Plant Height

Deciduous

Leaf type

Summer

Growth Season

Moderate

Growth Rate

Images of Giant hyssops

Quickly Identify Giant hyssops

Tall spikes of tubular flowers in whites, blues, reds, and purples.

Aromatic mint family foliage on square stems reaching 2 to 4 feet (60 to 120 cm).

Upright spikes with tubular, two-lipped blooms in blues, reds, pinks, and whites.

Lance-shaped green leaves with toothed margins, 1 to 4 inches (2.5 to 10 cm) long.

Square stems, 0.2 to 0.5 inches (0.5 to 1.2 cm) thick, with opposite branching patterns.

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Care Guide for Giant hyssops

Every week

Water

Water: Giant hyssops thrives in moderate moisture habitats, requiring consistent soil moisture without waterlogging. Weekly watering supports its growth, particularly outdoors as it is an herbaceous perennial. Rainwater during the growing season enhances its foliage and flowering.

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Learn More About Giant hyssops

How to Grow and Care

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Images of Giant hyssops

Species

Quickly Identify Giant hyssops

Care Guide for Giant hyssops