Product Field NotesLavender Plants
Castilliano 2.0 Lilac Lavender: Slim Spanish Color for Window Boxes
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Castilliano 2.0 Lilac lavender is a Spanish lavender built to fit. It grows upright and slim, about 14 inches tall but only around 8 inches wide, with silver-gray foliage and lilac-purple flower heads topped by little petal-like flags. It starts flowering early in the season and keeps reblooming as long as you remove the spent heads.
It is part of the Castilliano 2.0 series of Lavandula stoechas, which also includes Rose and White. Like other Spanish lavenders, it loves heat and sun and is less cold-hardy than English types.
Castilliano 2.0 Lilac at a glance
| Trait | What to expect |
|---|---|
| Botanical name | Lavandula stoechas Castilliano 2.0 Lilac |
| Flower color | Lilac-purple |
| Foliage | Silver-gray |
| Habit | Upright and slim |
| Mature size | About 14 inches tall and 8 inches wide |
| Bloom | Starts early May, peaks mid-May in warm climates, high rebloom into summer |
| Hardiness | USDA zones 7a to 9a |
| Fragrance | Moderate; resinous and herbal |
| Culinary use | Not recommended |
Why the slim shape matters
Most lavenders need a couple of feet of elbow room. At about 8 inches wide, Castilliano 2.0 Lilac can sit shoulder to shoulder in a window box or ring the edge of a large pot with other sun lovers. Three or four in a long planter make a tidy row of lilac color that looks good from the street and from inside the house.
The silver-gray foliage helps too. It brightens planters even between flushes and pairs well with white, soft pink and deep purple flowers.
Planting a window box or planter
- Container: any box or pot with drainage holes. Lavender will not forgive a planter that holds water.
- Mix: a gritty, fast-draining potting mix, or regular mix lightened with coarse grit.
- Spacing: about 8 to 10 inches apart.
- Light: full sun. South- and west-facing boxes are ideal.
- Partners: choose companions that also like it on the dry side, such as rosemary, thyme or trailing silver foliage.
Spanish lavender does not need a winter chill to bloom, so a spring planting flowers quickly.
Keeping it in bloom
Its high rebloom rating is the reason to deadhead. Snip each faded flower head back to the foliage and new ones follow. After a big flush, a light all-over trim keeps the plant compact. Water when the top of the mix dries; window boxes in full sun can dry quickly in July, so check them more often than garden beds.
When frost is on the way, move potted plants to a bright, cool, frost-free spot and water sparingly until spring. Window boxes can be emptied and the plants potted up for winter, or simply enjoyed for the season. The Frost Date Estimator helps with timing.
Flowers and uses
Castilliano 2.0 Lilac is rated good for fresh-cut flowers and fair for drying, and its listed best use is u-pick style bundles, a sign of how freely it blooms. Snip a few stems for a bud vase. Its scent is resinous and herbal, and culinary use is not recommended. Pollinators love it, and deer tend to leave it alone.
Formats offered
Choose a 3-inch plug, a 4-inch pot or a 1-gallon pot. Plugs and 4-inch pots are the easiest fit for window boxes. See the product page for current sizes and availability, and use Notify Me if it is not ready yet.
Frequently asked questions
How many fit in a 3-foot window box?
Three or four, spaced about 8 to 10 inches apart, leave room for a trailing partner.
What other colors are in the series?
Castilliano 2.0 also comes in Rose, with pink blooms, and White.
Will it survive winter outdoors?
It is rated for zones 7a to 9a. In colder areas, bring it into a protected spot before hard freezes.
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