Agave ocahui (Ocahui Century Plant) is a succulent that forms a usually solitary, symmetrical rosette of densely packed, narrow, dark…
Agave ocahui is a very attractive Agave that grows up to 4 feet in diameter, up to 20 inches tall, with dense, symmetrical rosettes of narrow, dark green leaves. The margins are toothless and reddish-brown. The leaves have a slight gray-brown sharp 1-inch tip to them, that bends easily. The leaves are up to 45 cm long and up to 1 inch wide. The flower spike is up to 15 feet tall, unbranched and densely crowded with small bright yellow flowers. Once the plant flowers, it will die.
Scientific Name: Agave ocahui Gentry
Common Names: Ocahui, Ojahui, Amolillo
It thrives best in full sun to light shade. A south or south-east facing window works great.
It prefers to grow in well-drained soil. Use standard succulent or cacti potting mix.
It prefers warm spring and summer temperatures 70ºF/21ºC – 90ºF/32ºC and cooler fall and winter temperatures 50ºF/10ºC – 60ºF/15ºC.
In spring, water this plant when the top inch of soil is totally dry. Don’t let the soil become completely dry. In the winter and fall, when growth is suspended, water very lightly. Too much water can cause root rot or cause the leaves to become pale and flop.
Fertilize with a standard liquid fertilizer every two weeks during spring and summer. Do not feed during fall and winter.
It can be easily propagated from offshoots which is the fastest and most reliable method of agave plant production. Agave plants put out offshoots from the base of the mother plants that are easily removed to begin a new plant. Growing agave from seed produces a large number of plants quickly. A moist, sterile soil mix containing equal parts perlite and sphagnum peat is ideal for germinating seeds in a warm location with indirect light. The soil must stay lightly moist until the plants are established. A clear plastic covering helps keep the soil moist during the two to three weeks until the seeds sprout, then a daily misting keeps the seedlings moist until ready to transplant.
Pests and Diseases:
It has no serious pest or disease problems. Watch for mealybugs and scale.
Agave ocahui ("Ocahui / Ojahui / Amolillo")
Foliage Color: Green
Size: 3'H x 3'W
Light Requirements: full sun or partial shade
Origin/parentage: North eastern part of the Mexican state of Sonora.
Propagation: Seed. This plant is not known to make bulbils or offsets.
Notes: This agave grows as a single, symmetrical rosette. The leaves are straight, stiff and flattened on the top.
2133 Elkhorn Road, Castroville, CA 95012
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Drought-tolerant suitable for xeriscaping
This plant is resistant to deer
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
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)
Plant has spines or sharp edges use extreme caution when handling
8.6 to 9.0 (strongly alkaline)
From seed germinate in vitro in gelatin, agar or other medium
Allow pods to dry on plant break open to collect seeds
This plant is said to grow outdoors in the following regions:
Simpsonville, South Carolina
On Mar 26, 2015, poeciliopsis from Phoenix, AZ wrote:
Central Phoenix -- I have a 20 year old Agave ocahui that is now about to bloom. The flower stalk is 10+ feet tall and growing but not yet with flowers. It is a solitary (non-pupping) plant in the ground against an east-facing block wall. This species really seems to benefit from heat. For the first 10 years of its life, the wall was a cedar fence and the ocahui grew slowly and didn't exceed 3 feet diameter. Once the cedar was replaced with a block wall, the ocahui grew rapidly to 6 feet diameter.
Note as of Dec. 31, 2015 -- Unlike some Agaves that live for a year or more after flowering, my A. ocahui died rapidly after flowering. It flowered in spring 2015 and was completely dead by October.
On Nov 9, 2013, 1077011947 from Greer, SC wrote:
I have grown Agave ocahui in a lage shallow dish pot for many years without any protection. IT has survived11F one Winter(Twice). IT looks great in a pot. It is growing on a bed of shallow grvel in front of the hpouse in full sun. here in Simpsonville. SC.
On Oct 2, 2009, BajaBlue from Rancho Santa Rita, TX (Zone 8a) wrote:
This medium-sized century plant forms an 18" tall x 3' wide solitary rosette of dark green leaves, edged with smooth reddish-brown margins. When the clumps mature, they are topped with a 9' tall narrow spike of bright yellow flowers.
Hailing from the northern Mexico state of Sonora, A. ocahui can be found on volcanic limestone up to 4,500' elevation.
On Feb 9, 2005, htop from San Antonio, TX (Zone 8b) wrote:
I have not grown this plant. It rarely suckers. It is suitable for growing in containers due to its small size and symmetrical upright growth.