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PlantFiles: Saucer Plant
Aeonium urbicum

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Family: Crassulaceae (krass-yoo-LAY-see-ee) (Info)
Genus: Aeonium (ee-OH-nee-um) (Info)
Species: urbicum (UR-bee-kum) (Info)

Synonym:Sempervivum urbicum
Synonym:Sempervivum retusum

3 members have or want this plant for trade.

Category:
Tropicals and Tender Perennials
Cactus and Succulents

Height:
4-6 ft. (1.2-1.8 m)

Spacing:
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

Hardiness:
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
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Pink
White/Near White

Bloom Time:
Late Winter/Early Spring

Foliage:
Grown for foliage
Evergreen
Blue-Green
Succulent
Rubbery-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is monocarpic

Soil pH requirements:
6.1 to 6.5 (mildly acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; germinate in vitro in gelatin, agar or other medium

Seed Collecting:
Bag seedheads to capture ripening seed
Collect seedhead/pod when flowers fade; allow to dry

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By albleroy
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There are a total of 15 photos.
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Profile:

3 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive zone10 On Feb 28, 2011, zone10 from San Diego, CA (Zone 10b) wrote:

Following winter rains, these aeoniums plump up to enormous sizes, sometimes 2'-3' in diameter. They are relatively easy to care for, surviving on lean soil, little to no summer water, and in shade to full sun. This plant seems to grow much larger if they are sheltered from the hot summer sun. As with most aeoniums, these plants propogate from cuttings very easily. During winter/spring, I cut the new side growths/pups when they are about 6" in diameter, and stick them in the wet soil. It has always been advised to harden them off first, but I have never done this and have never had one rot. Best to withhold summer water and allow these plants to go dormant. The heads will shrink to a fraction of their full size, but I have found aeoniums to be healthier when allowed their natural growing cycle.

Positive palmbob On Mar 16, 2004, palmbob from Acton, CA (Zone 8b) wrote:

In nature this is a nonbranching Aeonium, and very tall up to over 5' tall, from the Canary Islands. Large heads up to 10" across. Green color. Good in groups.

Note: many plants sold in nurseries as 'Dinner Plate' or 'Saucer Plant' Aeoniums are obviously either hybrids of this or something else entirely different as these plants, though sharing the huge head of A urbicum, are often stemmless, or are branching and tend to flower at a height on only a few inches. None of these characteristics are consistent with this species, which is a tall, robust, unbranching plant. I have no idea how the nursery plants ended up with this name other than possibly hybridization some time ago, but more often than not, a plant sold or displayed as Aeonium urbicum is NOT Aeonium urbicum as described taxonomically, or found in nature in the Canary Islands.

Positive albleroy On Feb 3, 2003, albleroy from Wavre/ greenhous +/- 2500 species, IA wrote:

A fine plant, usually recognizable by its tall unbranched stem, from 3ft upto !!! 7 feet high. Leaves in a broad densee rosette, glabrous, green or glaucous, elongate-spathulate. Inflorescence very large, glabrous, pyramidal up to 80 cm long. Grows from sea-level upto 1100 m high.
Seedlings available on request.
We find it in Teno, Anaga, Santiago, Masca, La Laguna etc.

Indeed dear, it is a non branching Aeonium who, after flowering, will dye.

Regional...

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

Los Angeles, California
Richmond, California
San Diego, California
San Marino, California



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