Stony Saxifrage Saxifraga callosa (8)
ABOUT
The plant known as the stonebreaker features a stunning array of characteristics that are visually appealing without considering its dimensions. It is known for its lush, green foliage that forms a dense basal rosette. Leaves are typically rounded to oval-shaped with a somewhat fleshy texture. They may also display a variety of textures or have fine hairs along their edges, giving them a soft or rough feel to the touch. During its blooming season, the plant produces attractive flowers that captivate onlookers. These flowers are typically small and star-shaped, often seen in hues of white, pink, or red. They possess a delicate charm with their slender petals radiating outward from a central point, akin to little stars dotting the foliage below. The blossoms are typically arranged in compact clusters or panicles, creating a visually appealing contrast against the greenery. The stonebreaker's visual appeal is further accentuated by its tendency to form cushions or mats over the ground or among rocks, where it's often found growing naturally. This cushioning habit provides a lush, verdant carpet effect that is highly prized in gardens and natural landscapes alike. Overall, the plant is revered for its rugged beauty which allows it to thrive in rocky environments, lending itself to a picturesque quality that can enhance any garden setting.
About this plant
NamesFamily
Saxifragaceae
Synonyms
Smooth Saxifrage, Fleshy Saxifrage
Common names
Saxifraga aizoides var. callosa, Saxifraga callosa subsp. callosa, Saxifraga gaudinii, Saxifraga vayredae
ToxicityTo humans
There is limited information available on the toxicity of Saxifraga callosa, commonly known as stout saxifrage, to humans. Generally, most species of the Saxifraga genus are not known for being toxic. However, without specific toxicological data on stout saxifrage, it is advised to avoid ingestion and to exercise caution. If the plant is indeed poisonous and one experiences symptoms after consumption, those symptoms could theoretically include gastrointestinal upset such as nausea, vomiting, or diarrhea. If suspecting poisoning, seek medical attention promptly.
To pets
Information on the toxicity of Saxifraga callosa, or stout saxifrage, to pets is also scarce. Like with humans, the Saxifraga species are not typically recognized for being highly toxic to animals. However, caution is still recommended due to the lack of specific data on this plant. Should a pet ingest parts of the stout saxifrage and it proves to be toxic, the pet may exhibit signs such as vomiting, diarrhea, or drooling. If any of these symptoms are observed, contact a veterinarian as immediate care might be necessary.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Green
Flower color
White
Height
0.82 feet (25 cm)
Spread
0.82 feet (25 cm)
Plant type
Herb
Hardiness zones
8
Native area
Europe
Benefits
General Benefits- Ornamental Value: Saxifraga callosa, commonly known as thick-leaved saxifrage, is admired for its aesthetic appeal and often used in rock gardens and as border edging due to its attractive foliage and delicate flowers.
- Drought Tolerance: Being a succulent, the thick-leaved saxifrage can withstand periods of dryness, making it suitable for xeriscaping or gardens in arid climates.
- Low Maintenance: The plant requires minimal care once established, making it a convenient choice for gardeners with limited time or those new to gardening.
- Soil Stabilization: With its mat-forming habit, this saxifrage can help stabilize soil and prevent erosion on slopes or in areas prone to soil degradation.
- Pollinator Attraction: The flowers of the thick-leaved saxifrage attract pollinators such as bees and butterflies, benefiting the local ecosystem by supporting these species.
- Seasonal Interest: The plant offers visual interest throughout growing seasons, with lush greenery and colorful blooms that can vary in shade depending on the specific cultivar.
- Versatility in Design: Its compact size and growth habit make Saxifraga callosa suitable for a variety of garden designs, including alpine, rock, and cottage gardens.
- Cold Hardy: Thick-leaved saxifrage is capable of surviving in cold temperatures, making it a good fit for gardens in cooler regions or higher altitudes.
Medical Properties
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Saxifraga callosa, commonly known as Stout Saxifrage, can be utilized in rock gardens for its ornamental beauty, enhancing the aesthetic of rugged landscape designs.
- Stout Saxifrage can be incorporated into alpine troughs and containers, where its compact growth habit and attractive foliage add charm and appeal.
- The plant is often used in green roofs or living roofs for its low maintenance traits and ability to thrive in shallow, poor soil conditions.
- Stout Saxifrage can serve as a ground cover in shaded garden areas, forming mats that suppress weeds and reduce soil erosion.
- Because of its resilience to cold temperatures, Saxifraga callosa can be used in winter gardens to provide greenery when other plants may not survive.
- Its ability to grow in cracks and crevices makes Stout Saxifrage an ideal choice for restoration or stabilization projects on rocky or steep slopes.
- The flowers of Saxifraga callosa can be used in dried flower arrangements, maintaining their shape and color after drying.
- As a companion plant, the Stout Saxifrage can provide a contrasting texture or color to complement flowering plants or ornamental grasses.
- Gardeners may use this plant to create intricate garden patterns or mosaics when planted in conjunction with other low-growing alpine plants.
- In larger landscaped areas, Stout Saxifrage can be used to fill gaps between stepping stones, offering a soft edge and reducing the risk of soil runoff during rain.
Interesting Facts
Feng ShuiThe Saxifrage is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Saxifrage is not used in astrology practice.
Plant Symbolism- Resilience: Saxifraga callosa, commonly known as the "Sturdy Saxifrage," can grow in rocky and inhospitable terrain, symbolizing the ability to thrive in challenging conditions and overcome adversity.
- Protection: The Sturdy Saxifrage is often found in crevices and protected spaces on cliffs, symbolizing safe harbor and shelter from harm.
- Tenacity: With its capacity to split through rocks and stones to root, the Sturdy Saxifrage represents determination and the will to survive against the odds.
- Longevity: As some species of Saxifraga are known for their longevity and ability to live for many years, they can symbolize long life and perseverance.
WaterThe Stemless Saxifrage should be watered moderately to maintain slightly moist soil, especially during active growth in spring and summer. Water the plant thoroughly until water runs out of the drainage holes, approximately once every week to 10 days, depending on the climate and indoor conditions. During the dormant period in winter, reduce watering to every two weeks, allowing the top inch of soil to dry out between waterings. Be cautious not to overwater as this can lead to root rot. It's advisable to use around 8-16 ounces of water per watering session, adjusting based on the size of the pot and the plant's response.
LightStemless Saxifrages prefer bright, indirect light and can tolerate part shade. Avoid direct sunlight, particularly during the hottest part of the day, as it can scorch the leaves. A spot near a north or east-facing window would be ideal to provide the right lighting conditions without exposing the plant to harsh direct rays. These plants can also thrive under fluorescent lights, making them suitable for locations with less natural light.
TemperatureThe Stemless Saxifrage thrives in temperatures between 60 and 75 degrees Fahrenheit, which is typical of indoor environments. It's important to protect the plant from extreme temperatures, avoiding anything below 50 degrees Fahrenheit to prevent cold damage and above 80 degrees Fahrenheit to avoid heat stress. Maintaining a stable temperature within this range will promote healthy growth and flowering.
PruningPruning the Stemless Saxifrage is mainly done to remove dead or damaged leaves and to encourage a compact, bushy growth habit. Pruning can be carried out as needed throughout the year but is best done in early spring before new growth starts. Pinch off or use clean scissors to cut away excess growth, and always sterilize your tools to prevent the spread of disease. Regular pruning also helps in maintaining an attractive shape and promotes the health of the plant.
CleaningAs needed
SoilSticky Saxifrage, or Saxifraga callosa, thrives in a well-draining soil mix with coarse sand or perlite and peat or compost to retain some moisture. The ideal pH for this plant ranges from 6.0 to 7.5, slightly acidic to neutral.
RepottingSticky Saxifrage should be repotted every 2 to 3 years, or when you notice that the plant has outgrown its current pot, to provide fresh soil and encourage growth.
Humidity & MistingSticky Saxifrage prefers moderate humidity levels but is quite adaptable and can tolerate the drier conditions typically found in homes.
Suitable locationsIndoor
Place Sticky Saxifrage in bright, indirect light indoors.
Outdoor
Plant Sticky Saxifrage in partial shade, protect from hot sun.
Hardiness zone
5-9 USDA
Life cycleSaxifraga callosa, commonly known as the Stout Saxifrage, begins its life cycle as a seed that germinates in spring or summer in well-drained, rocky or sandy soil, often in alpine or subalpine regions. Once the seed sprouts, it grows into a small rosette of leaves at ground level, a stage that is adapted for surviving harsh conditions. As it matures, the rosette produces a flowering stalk in late spring or early summer, which bears clusters of white or pinkish flowers that attract pollinators such as bees and butterflies. After pollination, these flowers develop into capsule-like fruits that release seeds when ripe, completing the reproductive phase. Throughout the growing season, the plant enhances its energy reserves by photosynthesis in its thick, fleshy leaves, preparing for dormancy in winter where growth slows or ceases. In subsequent years, the plant repeats this cycle, with established plants able to produce multiple flowering stalks and expanding their vegetative growth through the formation of offsets.
PropogationPropogation time
Spring to Summer
Saxifraga callosa, commonly known as cliff saxifrage or smooth saxifrage, can be effectively propagated through division, which is a popular method for this plant. This process is best carried out in the spring just as the plant begins to grow, ensuring that the new divisions have the entire growing season to establish. To propagate by division, carefully lift the parent plant from the soil and gently separate it into smaller clumps, ensuring that each clump has several growth points and a healthy section of roots. These divisions can then be immediately replanted into well-draining soil, at the same depth they were originally growing. Water the newly planted divisions thoroughly to help settle the soil around the roots and remove any air pockets.
