Agastache 'Blue Fortune'
Mexican giant hyssop
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
- Position: Full sun
- Soil: Moderately fertile, well-drained soil
- Rate of growth: Average
- Flowering period: July to October
- Hardiness: Borderline hardy (may need winter protection)
Hyssops are great for adding vertical accents to a border, with whorls of long-lasting, tiny flowers arranged like a bottlebrush and pointed, aromatic fresh green leaves that are attractive to butterflies and bees. They are short-lived though, and may need replacing every few years, especially after a cold or wet winter. 'Blue Fortune' has loose spires of lilac-blue flowers from June to October and peppermint-scented leaves. This upright, bushy perennial is perfect for the middle of a sheltered, sunny border. Try it as part of a Mediterranean scheme, with grey-leaved plants, or among ornamental grasses.