Agave utahensis subsp. kaibabensis (Kaibab agave)

Agave utahensis subsp. kaibabensis (Kaibab agave) key facts

Growing Difficulty

Intermediate

Lifespan

Perennial; the flowering rosette dies and offsets carry on

Size

Rosettes 30-60 cm tall and 40-100 cm wide

Watering

Light feeder; a little slow-release fertiliser in the growing season is enough

Light & Placement

Full sun and good airflow; it grows large, so allow room.

Watering

The utahensis group dislikes humid heat; prioritise airflow in summer and water only when the mix is thoroughly dry.

Temperature & Winter

Native to rocky sites at 700-2,500 m. Hardiness data are scarce, so winter it dry in a bright spot out of the rain.

Soil & Repotting

A rock-dwelling plant: use a very free-draining gritty mix.

Notes

Tell it from the small varieties by leaf width (3-5.5 cm) and plant size. The tip spine is stout and sharp.

About Agave utahensis subsp. kaibabensis (Kaibab agave)

Agave utahensis subsp. kaibabensis is the largest form of the utahensis group, forming broad-leaved rosettes nearly a meter wide. Native to Grand Canyon rock outcrops, it suits intermediate growers aiming for a substantial specimen.

7 things to know before growing Agave utahensis subsp. kaibabensis (Kaibab agave)

1. 1Sun and Airflow

   Since this subspecies grows naturally on open rock faces, give it as much sun and airflow as possible year-round when kept outdoors. Insufficient light tends to make the leaves stretch out, softening the compact, broad-leaved form that defines this variety.

2. 2Water Deeply, Then Let It Dry

   Coming from an arid, rocky habitat, it does best with thorough watering only after the soil has fully dried out. Cut back on watering frequency as temperatures drop to help prevent root rot.

3. 3Fast-Draining Soil

   Use a well-draining succulent or cactus mix so water doesn't linger around the roots. Soil high in organic matter holds too much moisture and raises the risk of root rot.

4. 4Pot Size and Repotting

   Because mature rosettes reach 40 to 100 cm across, repot into a slightly larger pot during the growing season once roots fill the current one, leaving room for future growth. Hold off on watering for several days to a week after repotting to let disturbed roots settle.

5. 5Care During Cold Months

   Growth slows when temperatures drop, so space out waterings further and keep the soil on the dry side. In locations with prolonged rain or hard frost, moving the plant under eaves or indoors can help reduce stress on the plant.

6. 6Choosing a Good Plant

   Look for a plant with broad, thick leaves and a tightly formed rosette center, which shows off this subspecies' characteristic presence. Check that the leaf tips and base are free of damage or discoloration and that the plant is firmly rooted, not loose at the base.

7. 7Plan for Its Mature Size

   A full-grown rosette reaches roughly 30 to 60 cm tall and 40 to 100 cm wide, so it's worth planning placement and space around its size in a few years rather than just how it looks now.

Frequently asked questions about Agave utahensis subsp. kaibabensis (Kaibab agave)

Q.Is this agave suitable for beginners?

A.It's generally considered an intermediate-level plant, so some prior experience managing watering and sun exposure for succulents helps. With basic knowledge of succulent care, growers can build up experience with it gradually.

Q.How large does it eventually grow?

A.The rosette reaches roughly 30 to 60 cm tall and 40 to 100 cm wide, making it one of the larger forms within the utahensis group. Its broad, 3 to 5.5 cm wide leaves give it a rosette that can approach a meter across.

Q.What happens to the plant after it flowers?

A.It's a perennial, but each individual rosette dies back after flowering. Offsets that form around the base continue the plant, so the clump carries on across generations.

Q.Can it be planted directly in the ground outdoors?

A.Since it favors a well-draining environment similar to its native rocky habitat, in-ground planting calls for fast-draining soil and a spot with plenty of direct sun. It's also worth leaving enough surrounding space, since the rosette can eventually spread close to a meter wide.

Q.How is it different from other utahensis varieties?

A.This subspecies grows notably larger than other forms of utahensis, with broader leaves and a bigger rosette. Its size alone makes it visually distinct from the smaller utahensis varieties.

Handy Growing Tools for Agave utahensis subsp. kaibabensis (Kaibab agave)

Learn more about Agave utahensis subsp. kaibabensis (Kaibab agave) in the encyclopedia

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