Use & Care NotesLavender Plants
Javelin Compact Blue (Jin Cobule): Dark Blue Heads with Lilac Wings
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Javelin Compact Blue lavender, also listed as Jin Cobule, is a Spanish lavender in a cooler color than most. Its large flower heads are dark blue, topped with lavender-colored wings, and they sit over gray-green foliage on a compact, mounding plant about 14 inches tall and 6 inches wide in the listing's measurements.
It is Lavandula stoechas, rated for USDA zone 7b. That is a narrow and fairly warm rating, so in Michigan this is a lavender for containers and summer color, ideally in a pot you can carry indoors when the weather turns.
Javelin Compact Blue at a glance
| Trait | What to expect |
|---|---|
| Botanical name | Lavandula stoechas 'Jin Cobule' (Javelin Compact Blue) |
| Flowers | Large dark blue heads with lavender wings |
| Foliage | Gray-green, compact and mounding |
| Size | About 14 inches tall and 6 inches wide |
| Bloom | Starts early May, peaks late May, high rebloom |
| Hardiness | USDA zone 7b |
| Fragrance | Moderate; bold resinous-herbal with camphor and eucalyptus-like notes |
| Cut and dried | Good for both |
Why a blue Spanish lavender stands out
Most Spanish lavenders lean purple, pink or white. Dark blue heads with paler lavender wings give this one a two-tone look that reads crisp and cool, especially against white pots, light stone or pale wood. In a mixed container it pairs well with white or pink Spanish lavenders, and it gives a calm, blue note to a bright summer planter.
Its narrow footprint is handy. At roughly 6 inches wide, it slips into window boxes, slim planters along a railing or the tight spaces between other potted plants.
Planting and care
- Sun: full sun, six to eight hours.
- Soil: gritty, fast-draining mix; containers need drainage holes.
- Water: water needs are low. Let the top inch dry, then water thoroughly.
- Deadhead: snip spent heads to the foliage to keep its high rebloom going.
- Feed: sparingly, if at all.
Plant after your last frost; the Frost Date Estimator gives you a date.
Winter and the zone 7b rating
A zone 7b rating means mild winters only. Most of Michigan is several steps colder, so leave it outside only as an annual. To keep a plant, bring the pot into a cool, bright room before a hard freeze, water lightly through winter and move it back out after frost. Its slim shape makes it easy to fit on a sunny windowsill. If you are unsure of your zone, check the USDA Zone Finder.
Bouquets and drying
Unlike some Spanish lavenders, this one rates good for dried flowers as well as fresh. Cut heads when the wings have opened, bunch them loosely and hang them in a dark, airy spot. The dark blue holds well and makes a striking accent in dried arrangements or sachets. It is ornamental and not recommended for cooking.
Plant formats
It is offered as a 3-inch plug, 4-inch pot and 1-gallon pot. See the product page for current sizes and availability, or sign up for Availability Alerts.
Frequently asked questions
Is Jin Cobule the same as Javelin Compact Blue?
Yes. Jin Cobule is the cultivar name, and Javelin Compact Blue is the name it is sold under.
Will it survive winter outdoors in Michigan?
Not reliably. It is rated for zone 7b, so overwinter it indoors or grow it as an annual.
Do pollinators visit it?
Yes. Its pollinator rating is great, and its spring bloom is early enough to feed bees before summer flowers arrive.
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