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Caucasian Stonecrop

Phedimus spurius

Meet Caucasian stonecrop through its water-storing leaves, starry flowers, rocky-ground ecology, range context, and one community discovery.

  • water-storing leaves
  • small starry flowers
  • Caucasus to garden edges
Caucasian stonecrop with fleshy leaves on a low spreading stem.
Image: Ryan Hodnett · CC BY-SA 4.0

At a glance

  • Typelow perennial succulent
  • RangeCaucasus and nearby western Asia; widely planted elsewhere
  • Field marksfleshy leaves and starry flowers
  • Seasonflowers most visible in summer
Range & community finds

Where it grows in the wild

This map pairs the plant’s documented original region and later introduced places with public observation records.12

Field marks

How to recognize it

Read the plant as a low mat, not as a single leaf or flower.

Fleshy leaves

Short, thick leaves hold water and give the mat a full, waxy-looking texture.

Starry flowers

Small open flowers rise above the foliage in warm-season color.

Spreading stems

The plant moves sideways over open ground rather than building a tall clump.

Don't mix it up

Lookalikes & how to tell them apart

Several low stonecrops share a sunny-site silhouette, so compare more than color.

Other stonecrops

Check leaf thickness and flower shape. Related stonecrops may also make mats, but their leaves, bloom timing, and stem habit can differ.

Ice plants

Compare leaf form. Ice plants can cover dry ground too, yet often carry much longer or more sharply shaped leaves.

The story

A small reservoir over stone

On a warm wall edge, Caucasian stonecrop can look like a patch of green scales pressed close to the stone. Then the light catches each leaf: short, thick, and built to hold on. Its thick, juicy leaves store water, helping it survive in dry, sunny places where other plants might wilt. The flower is lovely, but the leaf is the plant’s first practical trick.

Caucasian stonecrop keeps a small water reserve in its leaves, so a hot stone edge can still carry a living patch of green. That makes it a useful plant to watch at ground level. Rather than throwing a tall shadow, it stitches across open places, filling cracks and edges where a deeper-rooted neighbor might not fit. Its first community record came from Utah, a broad location that gives this page a real encounter without turning one observation into a whole distribution story.

The plant’s documented home is around the Caucasus and nearby western Asian regions, while planting has moved it into gardens and disturbed sunny places much farther away. The map joins that history with reported observations. It is a guide to movement, not a promise that every point is wild or that every dry wall will host the species. Coral bells make another good comparison in scale: both can stay low, but coral bells trade this sun-and-stone habit for leafy woodland edges.

The low mat changes the small weather at its surface. Leaves shade tiny pockets of gravel; dead bits of stem and fallen leaves can settle between stones. Caucasian stonecrop does not turn bare rock into rich earth overnight, but it can make a thin, patchy surface less exposed. In bloom, the open flowers also give small visitors a place to land. The result is modest and easy to miss unless you look down: a plant storing water above a ground that stores whatever the wind leaves behind.

Its garden history can make the wild story feel blurry, which is a reason to observe rather than guess. Compare its fleshy leaves, spreading stems, and flowers together. Do not rely on a single red-tinged leaf; sunshine can change the color of some stonecrop foliage. For another visibly water-storing plant with a very different outline, see firesticks, whose bare-looking stems do the storage work.

Pause beside a sunny edge and photograph the whole patch before taking a close leaf picture. Notice whether the plant is in gravel, soil, a mortar crack, or the seam between paving and a bed. Then check for flowers, visiting insects, and bits of litter held among the stems. Those small details tell a more interesting story than a name alone: where this little reservoir is living, what it is keeping close, and what has gathered around it.

Ecology

Its place in the ecological web

Caucasian stonecrop makes a small living cover where heat and thin ground leave little room for larger plants.

Flower visitors

Small nectar stop

Its open, small flowers offer a visible landing point for visiting insects when the mat is in bloom.2

Soil

Soil and stone relationship

The plant is associated with dry, sunny, stony ground. Its low stems catch bits of leaf litter and dust between rocks, helping a thin surface layer hold together without claiming it remakes the soil.12

Timing

When to look

Leaves make the plant visible through much of the growing season; flowers are the easier summer cue.2

Leaves
Flowers
  • Peak bloom
  • Fading & dried heads
  • Leaves out
In Leafari

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  1. 1Photograph the whole mat and one flower cluster.
  2. 2Notice whether the ground is stone, gravel, soil, or a wall edge.
Caucasian stonecrop Leafari badge art.

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In the Leafari community

1Total finds logged
1Explorers journaled it

First found in Utah, United States, by Mystic-Naturalist-6

References

Sources

Key facts and claims trace back to a named reference. Superscript numbers in the text link here.

  1. Plants of the World Online: Phedimus spurius reference
  2. GBIF species record: Phedimus spurius range
  3. Wikimedia Commons image records image
  4. Leafari app records product-snapshot