Lavandula × intermedia
Lavandin (Lavandula × intermedia) is a perennial that reaches 90 cm × 1 m after ten years. Light: full sun. Hardy down to -23 °C. Drought tolerance: high.
A bigger, more vigorous hybrid than true lavender: a grey-green, aromatic subshrub that carries long-stemmed, strongly scented flower spikes in summer and draws bees and butterflies. Plant it in full sun in light, free-draining soil, lime is fine; it shrugs off drought but not wet ground in winter. Trim it every year after flowering without cutting into old wood, or it turns bare and leggy.
| Group | Perennial |
| Light | Full sun |
| Size after 10 years | 90 cm × 1 m |
| Ultimate size | 0.6–1 m × 0.6–1 m |
| Hardiness | down to -23 °C (USDA 6, RHS H7) |
| Soil | Average garden soil, Sandy, Calcareous |
| Foliage | Evergreen |
| Flowering | June–September, purple, white |
| Water need | Low |
| Drought tolerance | High |
| Maintenance | Medium |
| Root aggressiveness | Low |
| Suckering | no |
| Spreading | Low |
| Distance from buildings | no data |
| Distance from paving | no data |
| Litter | not typical |
| Planting distance | 70 cm |
| For dogs | Mildly toxic (uncertain) |
| For cats | Mildly toxic (uncertain) |
| For children | Mildly toxic (uncertain) |
| Typical price | no data |
Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor.
Data updated: October 26, 2026 · How our data is made
A perennial border that flowers all summer: plants, layout, numbers
A perennial border flowers from spring to autumn when its backbone is long-flowering perennials that bloom from June to September (catmint, woodland sage, coneflower, yarrow, Russian sage, gaura), with bulbs around them for spring and Japanese anemone, sedum and asters for autumn. Plant in groups of 3-7, tall at the back, low at the front; on average you need 5-7 plants per square metre. The calendars show the hardy perennials for a sunny spot that shops in your country sell most widely, with the price per plant.
Planting and pruning lavender: when, where, how much to cut
Lavender wants a sunny spot and loose, free-draining soil, and likes limy soil too; plant it in spring, in April or May, 30-45 cm apart for a hedge. Prune it twice a year: in spring, in late March or April once hard frosts are over, cut the shoots back by about two thirds, but always only into green, leafy growth; after flowering, in late July or August, take off the faded flower stalks with the top 2-3 centimetres of leaves, shaping a dome. Never cut into the bare, woody part, as lavender does not regrow from it. English lavender and 'Hidcote' survive hard winters, lavandin is a little more tender, and French lavender takes only mild winters.
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