Princess Flower, Glory Flower 'Athens Blue'

Tibouchina urvilleana

Family: Melastomataceae
Genus: Tibouchina (tib-OO-kee-nuh) (Info)
Species: urvilleana (ur-VIL-ah-nuh) (Info)
Cultivar: Athens Blue
Additional cultivar information:(aka Compacta)



Tropicals and Tender Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

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


Unknown - Tell us

Bloom Color:


Bloom Time:

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter




Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

Seed Collecting:

Unknown - Tell us


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

, (2 reports)

Lillian, Alabama

Lincoln, California

Marysville, California

Pittsburg, California

Beverly Hills, Florida

Hobe Sound, Florida

Jacksonville, Florida (3 reports)

New Smyrna Beach, Florida

Tallahassee, Florida

Tampa, Florida

Trenton, Florida

Fayetteville, North Carolina

Garner, North Carolina

Nashville, Tennessee

Austin, Texas

show all

Gardeners' Notes:


On Aug 16, 2011, jasminebugli from Jamshedpur,
India (Zone 10a) wrote:

It does not do well in full sun . The leaves get burn . I have this plant in a pot in Partial Shade.


On Aug 1, 2011, Dragon1946 from North Highlands, CA wrote:

I live in Sacramento,Ca. , . My princess flower has gone through 2 winters with some dead stems that I cut off.Still thriving and about 3 foot tall.I think this winter I might try a small set of miniture christmas lights to ward off the frost.


On Jan 23, 2010, JonthanJ from Logansport, IN wrote:

While it is not hardy in Zone 5, T. "Athens Blue" is a wonderful storable tropical. Stored before serious frost, in the dark, at about 45 degrees, it will defoliate but be ready to sprout new growth on the branches in the spring. The tricky consideration is that the new growth is very frost tender. The appropriate response is to keep it inside till June, either in the very cool storage, or in some sort of conservatory. This is not as much of a problem as it might seem because the bloom comes at the end of the summer or even later, in loose clusters at the end of every healthy branch. The display is generous, but for most of the summer it will just be a noteworthy foliage plant. If the fall is long and mild, you will see some pleasing leaf color changes.

The one I got l... read more


On Jun 15, 2009, jessicab77 from Austin, TX wrote:

I love this plant. The flowers are sooo beautiful and the bush itself is equally wonderful. I would caution those in Austin that full sun in the summer burns the leaves, I have just moved mine to part shade to see if it improves.