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Lavender Steps

Senecio crassissimus (sen-NEESH-shee-oh kras-SIS-sih-mus)

Family: Asteraceae Unknown Herbaceous (1-3 ft)

Vertical Leaf Senecio has fleshy blue-green leaves with purple margins that are flat so they can change direction and never have a flat surface that faces the sun. This rotation helps prevent the loss of moisture in hot environments. This serves them well in the sweltering heat of Madagascar where they are endemic. These flat leaves almost resemble propellers on a prop plane, thus another common name Propeller Plant. Growing as a perennial in zones 9a through 11b, it is not cold hardy in cooler zones, so must be grown in a container and brought in for the winter. Exposure to excessive cold temperatures will lead to a mushy plant. They will be drought tolerant once established, however, good drainage is crucial. Overwatering or allowing the plant to sit in wet conditions will cause the plant to become mushy and lose it rigidity. Draining the soil before watering will alleviate this problem as well as allowing the roots to dehydrate before the next watering. They will be at their best when located in bright but indirect sunlight in a sandy soil. In their perennial zones, growing season is in the winter, while they will remain dormant in the summer months. Insects, Diseases, and Other Plant Problems: Overwatering is a major issue for this plant. VIDEO Created by Laura Barth for "Houseplants, Succulents, and Cacti," a plant identification course created in partnership with Longwood Gardens. More information on Senecio .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 60 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Delosperma cooperi
Fills a similar niche Begonia cleopatrae Curio rowleyanus Nerium oleander

Full plant profile

Growing Conditions
Plant type
Houseplant; Perennial; Succulent
Life cycle
Perennial
USDA zones
9a, 9b, 10a, 10b, 11a, 11b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Sand; Shallow Rocky
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage
Available space
Less than 12 inches; 12 inches-3 feet
Mature size
Height: 1 ft. 6 in. - 2 ft. 0 in. | Width: 1 ft. 0 in. - 1 ft. 6 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Erect
Texture
Medium
Foliage
Broadleaf Evergreen
Leaf color
Blue; Gray/Silver; Green; Purple/Lavender; Variegated
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Oblong; Obovate
Leaf margin
Entire
Leaf feel
Waxy
Leaf value
Long-lasting; Showy
Leaf size
1-3 inches long, < 1 inch wide
Hairs present
No
Leaf detail
The fleshy, blue-green leaves are in a vertical position, flat, have pointed tips, and often have a vibrant purple outline and a waxy coating. They are simple and have to petiole, arranged alternately on the stems. Color fades in the shade.
Flower color
Gold/Yellow
Flower value
Showy
Flower form
Head
Flower shape
Radial
Flower size
< 1 inch
Flower detail
Yellow daisy-like flowers appear on stalks up to 2' tall in mid to late summer until autumn.
Bloom time
Fall; Summer
Stem color
Green; Purple/Lavender
Stem detail
Thick, erect and greenish-purple with leaf scars below
Wildlife & Ecology
Native status
Unknown
Origin
Madagascar
Play value
Attractive Flowers; Easy to Grow; Textural
Food & Medicine

Uses (ethnobotany)

Houseplant

Landscape Use
Landscape location
Container; Patio
Landscape theme
Drought Tolerant Garden; Rock Garden
Design feature
Border
Garden tags
#showy leaves #succulent #contrast #low maintenance #drought tolerant #purple #fleshy leaves #interesting leaves #silver leaves #houseplant #unusual leaves #interiorscape #rock garden #problem for dogs #problem for horses #problem for cats #container plant #heat tolerant #wet soils intolerant #variegated #blue leaves
Problems & Resistance
Problems
Poisonous to Humans; Problem for Cats; Problem for Dogs; Problem for Horses
Resistant to
Drought; Heat; Humidity
Propagation
Division; Leaf Cutting; Stem Cutting
Poison severity
Medium
Poison parts
Leaves
Poison symptoms
Toxic if ingested.
Toxic principle
Pyrrolizidine alkaloids
Contact dermatitis
No
Toxicity summary
Medium severity poison; parts: Leaves

Planted at Hunnicutt

Nobody’s planted this one yet.