Anise Hyssop Care (Agastache 'Blue Fortune')

Agastache 'Blue Fortune' performs best with strong, direct sun for sturdy, floriferous growth.

• Provide 6–8 hours of direct sun daily; full sun is ideal, especially in cooler climates with mild summers.
• In hotter regions, give morning sun with light afternoon shade to reduce leaf scorch and moisture stress, particularly in dry, exposed sites.
• The plant tolerates light partial shade (around 4–5 hours sun), but flowering and scent, important for Anise Hyssop, decline in too much shade.

Agastache 'Blue Fortune' prefers consistently dry-leaning conditions and dislikes heavy, waterlogged soil.

• Allow the top 5–7 cm of soil to dry fully before watering; established plants in the ground often manage on rainfall once roots are deep.
• Use well-drained, gritty or sandy soil; after planting, water deeply but infrequently so moisture penetrates 15–20 cm and encourages deep rooting.
• Reduce watering in cool seasons; yellowing, limp stems suggest overwatering and poor drainage, while crisp, browning leaf edges signal prolonged drought stress.

This hybrid hummingbird mint is a hardy perennial that tolerates a wide temperature range once established.

• Optimal growth and flowering occur around 65–85°F (18–29°C); plants stay compact and floriferous in warm, bright summers.
• Agastache 'Blue Fortune' typically survives winter down to about -20°F (-29°C) in well-drained soil, entering dormancy and resprouting in spring.
• In heat waves above 95°F (35°C), flowering can slow; provide mulch to moderate root temperatures and avoid cold, soggy sites that increase winter loss.

This plant handles typical outdoor humidity levels and rarely needs special humidity care.

Agastache 'Blue Fortune' prefers well-drained, moderately fertile, slightly alkaline to neutral soil.

• Use a loose, sandy or loamy structure with 20–30% compost mixed into native soil for moderate fertility.
• Ensure very sharp drainage by incorporating coarse sand or fine gravel, especially in areas with heavy clay.
• Aim for pH 6.5–7.5; add lime gradually if the soil is consistently more acidic.
• Avoid compacted, waterlogged, or peat-heavy mixes, which reduce aeration and quickly lead to root rot.

This species grows well in containers when drainage and stability are managed carefully.

• Choose a pot at least 30–35 cm deep to accommodate the taproot and prevent the plant from becoming root-bound too quickly.
• Select a heavier material such as ceramic or thick terracotta to stabilize the tall flowering stems against wind.
• Elevate the container slightly on pot feet or bricks so drainage holes stay clear and excess water exits rapidly.

Agastache 'Blue Fortune' benefits from modest feeding in lean soils but grows acceptably in average garden conditions.

• Apply a light layer of compost or a balanced slow-release fertilizer (around 10-10-10) in early spring to support new growth.
• Use half-strength liquid balanced fertilizer every 4–6 weeks during the growing season if soil is poor or plants look pale.
• Avoid high-nitrogen products that encourage soft, floppy growth at the expense of flowers and scent in Anise Hyssop.
• Stop feeding in late summer to early fall so growth can harden before winter dormancy.

Pruning supports compact growth and strong flowering in Agastache 'Blue Fortune'.

• In late winter or very early spring, cut back old stems to 5–10 cm above the crown using clean, sharp pruners.
• During summer, deadhead spent flower spikes to extend blooming and keep the plant tidy.
• Thin weak or crowded stems at the base to improve air flow and reduce disease risk.
• Lightly shape after main flowering if stems flop, shortening them by up to one-third without cutting into the woody crown.

Agastache 'Blue Fortune' is usually grown in garden beds, with transplanting more common than frequent repotting.

• Transplant in spring or early fall when temperatures are mild and soil is workable, avoiding peak summer heat.
• Move plants when growth slows, clumps outgrow their space, or roots circle inside a container and emerge from drainage holes.
• Water thoroughly the day before moving, then lift with a generous root ball to limit root disturbance and stress.
• Replant at the same depth in free-draining soil, water in well, and keep evenly moist for 1–2 weeks until established.

Agastache 'Blue Fortune' is commonly propagated by division and softwood stem cuttings.

• Divide established clumps in early spring, lifting the plant and separating healthy sections with several shoots and roots.
• Take 8–10 cm softwood cuttings in late spring to early summer, removing lower leaves and any flower buds.
• Insert cuttings into a free-draining mix, keep at 65–75°F with bright, indirect light, and maintain lightly moist conditions.
• Sow seeds from related Agastache types in late winter indoors, using light, well-drained seed mix and minimal covering.

Agastache 'Blue Fortune' is reasonably cold hardy in much of the US and needs only modest winter care in the ground.

• Allow stems to stand through fall for crown protection, then cut back in late winter rather than autumn.
• In colder regions, apply a 5–8 cm mulch layer around the root zone after the first hard frost, keeping mulch off the crown.
• For container plants in freezing climates, move pots to a sheltered, unheated space or cluster them against a wall and insulate the container.