Photo by Melody

PlantFiles: Jamaican Lilac, Jam Lilac, Tropical Lilac
Cornutia grandifolia

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Cornutia (korn-OO-tee-a) (Info)
Species: grandifolia (gran-dih-FOH-lee-uh) (Info)

One vendor has this plant for sale.

9 members have or want this plant for trade.

Tropicals and Tender Perennials

10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

10-12 ft. (3-3.6 m)

USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From woody stem cuttings
From softwood cuttings

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By KlassAct
Thumbnail #1 of Cornutia grandifolia by KlassAct

By artcons
Thumbnail #2 of Cornutia grandifolia by artcons

By whitedawn45
Thumbnail #3 of Cornutia grandifolia by whitedawn45

By whitedawn45
Thumbnail #4 of Cornutia grandifolia by whitedawn45


2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive vitrsna On Jul 1, 2012, vitrsna from Colima
Mexico (Zone 11) wrote:

this plant can be easily grown from seed. the seeds look like peppercorns. using peat pellets in addition to outdoor sowing, two seedlings appeared 6 days after planting (one in a peat pellet and one outside). i soaked the seeds in warm water for 24+ hours prior to planting.

Positive FlaFlower On Oct 3, 2011, FlaFlower from Miami Dade, FL (Zone 11) wrote:

It does go dormant in my zone 9a but it returns in the spring without issue, so I think it deserves better than a zone 10 +


This plant has been said to grow in the following regions:

Fort Lauderdale, Florida (2 reports)
Fort Pierce, Florida
Hollywood, Florida
Merritt Island, Florida
Palm City, Florida
Pompano Beach, Florida
Saint Petersburg, Florida
Titusville, Florida

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