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Sedum 'Tricolor'

Sedum spurium 'Tricolor' · Crassulaceae

Sedum 'Tricolor' (Sedum spurium 'Tricolor') in flower
Photo: Ghislain118 (AD) http://www.fleurs-des-montagnes.net, via Wikimedia Commons (CC BY-SA 3.0)

Small, rounded leaves of green edged in cream and flushed with pink, on a creeping mat, with pink flowers in summer.

Size
4 in tall, 18 in wide
Zones
3 to 9
Light
Full sun to part sun
Flowers
Late June to late July
Pets
Toxic to people
Job in a bed
Carpet

A bed built around sedum 'Tricolor'

The planner designed this bed around sedum 'Tricolor' when this page was made: a 12 × 6 ft (3.7 × 1.8 m) English border in zone 6, full sun. It chose the other plants from the 715 that suit those conditions and its dry soil, and says below why sedum 'Tricolor' stands where it does.

A 12 × 6 ft (3.7 × 1.8 m) bed at eye level in mid July: Sedum 'Tricolor', Sea thrift, Little bluestem 'The Blues', False sunflower 'Summer Nights', Silver sage, Wild lupine, Ornamental onion 'Purple Sensation'.
A 12 × 6 ft (3.7 × 1.8 m) English border in zone 6, full sun, seen from the path in mid July.
4. False sunflower 'Summer Nights'44. False sunflower 'Summer Nights'44. False sunflower 'Summer Nights'43. Little bluestem 'The Blues'33. Little bluestem 'The Blues'33. Little bluestem 'The Blues'35. Silver sage52. Sea thrift22. Sea thrift22. Sea thrift22. Sea thrift22. Sea thrift21. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'12. Sea thrift22. Sea thrift22. Sea thrift26. Wild lupine66. Wild lupine66. Wild lupine67. Ornamental onion 'Purple Sensation'77. Ornamental onion 'Purple Sensation'76. Wild lupine66. Wild lupine66. Wild lupine66. Wild lupine66. Wild lupine61. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'11. Sedum 'Tricolor'17. Ornamental onion 'Purple Sensation'77. Ornamental onion 'Purple Sensation'7
From above, to scale. Each circle is one plant, as wide as the room it needs.

The plants

  1. 2 Sea thrift × 8, white
  2. 3 Little bluestem 'The Blues' × 3, tan
  3. 4 False sunflower 'Summer Nights' × 3, yellow
  4. 5 Silver sage × 1, silver leaves
  5. 6 Wild lupine × 8, blue
  6. 7 Ornamental onion 'Purple Sensation' × 4, purple

Why this plant

  • The only dense clusters. The others are globes, spires and daisies. Shape reads at a distance, where colours blur.
  • The only pink.

Why here

  • Under the taller plants. It runs back between them as living mulch: there its job is to cover the soil, not to be looked at.
  • 18 plants in 4 groups (5, 5, 5 and 3). Seen again further along, the same plant ties the bed together.
  • Fine leaf against bold. Silver sage is beside it: the strongest contrast of leaf there is.

Why now

  • In flower for five weeks. From late June to late July.
  • In company. With false sunflower 'Summer Nights' in late June: 2 kinds at once.

Planned as an English border: 6 of the 7 groups (86%) are drifts, longer along the bed than they are deep. False sunflower 'Summer Nights' and little bluestem 'The Blues' anchor the back corners of the bed: the tallest plants on the plan stand there. Sedum 'Tricolor' is the plant there is most of: 18 of the 45.

The planner's own design check: 12 Excellent, 5 Good. It flags one thing to watch: Nothing on this plan is highly poisonous or an aggressive spreader.

Open this bed in the planner Change its size, the sun or the style, move plants about, or swap one for another.

Where sedum 'Tricolor' goes in a border

At 4 in it belongs at the front of a bed. In the planner's ten height classes it is ground-hugging (up to 6 in).

Its job: carpet. A groundcover planted in threes and fives to cover the soil: along the front, and just behind it.

A three-coloured carpet for a dry edge. It is slower than plain two-row stonecrop. Pull out any shoots that turn plain green.

  • Variegated groundcover in dry soil
  • Edging
  • Containers and troughs

What to plant with sedum 'Tricolor'

Plants recorded as good partners for it, and what each pairing does:

  • Hens and chicks: its green leaves are a setting for the flowers, before and after; happy in the same dry soil.
  • Blue fescue: its blue-green leaves are a setting for the flowers, before and after; tall enough (10 in) to stand behind it; happy in the same dry soil.
  • Sedum 'Angelina': its chartreuse leaves are a setting for the flowers, before and after; happy in the same dry soil.

Questions about sedum 'Tricolor'

Does sedum 'Tricolor' need sun or shade?

Sedum 'Tricolor' grows in full sun (6 or more hours of direct sun a day) and part sun (4 to 6 hours of sun, including some afternoon sun).

It wants dry, sharply drained soil, on the lean side, with no feeding, and little watering once settled. Once settled in, it stands drought.

What zones does sedum 'Tricolor' grow in?

USDA zones 3 to 9. It is hardy to zone 3, which means it survives winter nights down to about −30 °F (−34 °C).

Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.

When does sedum 'Tricolor' flower in my zone?

In zone 5 it flowers late June to late July. As a summer flower it moves about half a week for every zone: earlier where it is warmer.

Roughly when sedum 'Tricolor' is in flower
Zone 3Early July to early August
Zone 4Early July to early August
Zone 5Late June to late July
Zone 6Late June to late July
Zone 7Late June to mid July
Zone 8Late June to mid July
Zone 9Mid June to mid July

Worked out from Hopkins' bioclimatic law: spring arrives about four days later for each degree of latitude north, and one zone is roughly two degrees. A warm spring or a cold one moves any garden two weeks either way.

How far apart should sedum 'Tricolor' be planted?

12 in (30 cm) apart, from the middle of one plant to the middle of the next. That is a little closer than its full width of 18 in (45 cm), so a group knits into one patch.

It grows 4 in (10 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.

How many sedum 'Tricolor' plants do I need?

At 12 in apart, set out in staggered rows:

  • 12 to fill 10 square feet (about 1 m²)
  • 11 for a single row 10 ft (3 m) long
  • 38 to fill a 4 × 8 ft bed on its own

In a mixed border, plant it as threes and fives, along the front and just behind it.

In the bed above, the planner used 18 in four groups.

Is sedum 'Tricolor' poisonous?

Yes: mild toxicity to people. May cause mild stomach upset if eaten.

Rated from NC State Extension. Where references disagree, the more cautious rating is used.

Do deer eat sedum 'Tricolor'?

Mostly not. NC State lists it as resistant to deer and rabbits. No plant is proof against a hungry deer in a hard winter, but this one is low on the menu.

Will sedum 'Tricolor' spread?

It spreads sideways, by runners or roots; the risk of it taking over is moderate. Spreads by rooting stems into a mat. Easy to pull up.

What flowers after sedum 'Tricolor'?

Sedum 'Tricolor' is over by late July. These start as it finishes and carry the same spot on, so it never goes flat:

What does sedum 'Tricolor' look like in winter?

Sedum 'Tricolor' holds some of its leaves into winter, more in a mild year or a sheltered spot, and they look tired by March. Cut the old ones off as new growth starts.

Is sedum 'Tricolor' good for bees and butterflies?

Sedum 'Tricolor' is visited by pollinators, bees, butterflies and songbirds.

More Sedum

In these guides

Zone guides: Zone 3 · Zone 4 · Zone 5 · Zone 6 · Zone 7 · Zone 8 · Zone 9

In flower in: June · July

Every fact on record

Type
Perennial (groundcover)
Size
4 in (10 cm) tall, 18 in (45 cm) wide
Plant
12 in (30 cm) apart
Height class
Ground-hugging (up to 6 in)
Place in the bed
Front
Flowers
Late June to late July; dense clusters; pink
Leaves
Fine texture, semi-evergreen; variegated, green
Shape
Mat-forming, spreading
Hardy in
USDA zones 3 to 9
Light
Full sun, part sun
Soil
Lean, dry and sharply drained
Water
Low
Feeding
None needed
Family
Crassulaceae
Comes from
North Eastern Turkey to Northern Iran
Attracts
Pollinators, bees, butterflies, songbirds
Stands up to
Deer, rabbits, drought, pollution, erosion

Checked against NC State Extension and VASCAN (plants of Canada). Flowering times are for zone 5: later in colder zones, earlier in warmer ones. Toxicity and spread information is a general gardening guide, not veterinary or medical advice, and invasive status varies by region. If a person or pet eats a plant, contact poison control or a vet. Check your local invasive species list before planting anything with a spread warning.