Sempervivum ‘Unicorn’ is an enduring succulent up to 2 inches (5 cm) tall, that makes a huge, enthusiastic, up to 18 inches (45 cm) wide bunch of olive-green rosettes, up to 3 inches (7.5 cm) in measurement. Wool leaves, flush blushing pink shading to red tips in the summer heat.
How to Grow Sempervivum ‘Unicorn’
Cultivation: Sempervivum ‘Unicorn’ are not hard to develop, if they are not waterlogged and killed from overabundance of watering. It can be grown for seeds and seedlings. It is best to sown seeds in springtime. Stratify the seeds in a moist-kept seedbox to hasten the germination process. As the seedlings grow to an inch, sprinkle mist water every few days and add gravel as mulch. Transplant the seedlings in suitable soil. Carefully place the seedling down the ground while covering the base with the soil. Thump the soil away the surrounding of the base so that the seedling stays in place. Water lightly and alternately. Leave the soil dry completely before watering again.
Soil: It prefers to grow in poor soils that have a well-draining capacity. Mixture of gritty-loam soil is recommended.
Exposition: Place the succulent in spots where it can be exposed in full sunlight.
Propagation: Unicorn can be effectively developed outdoors and in receptacles. It is monocarpic succulent wherein soon after flowering, the mother normally falters but sends off numerous counterbalances that will keep on developing as it groups around the mother base like chicks. These balances can be effectively repotted, or the plants can be left to frame an amassing mat. Simply cut an inch of offsets with several rooting from the base of the mother plant and have it transplanted. Place the plant in the soil and work the offsets down the soil as you spread the roots. Backfill with soil and lightly press the soil around the base to secure its gait. Water lightly and as needed only.
How to Care For Sempervivum ‘Unicorn’
Frost hardy: Unicorn quite tolerates in freezing temperature that are within the range of USDA hardiness zone 4a to 8a: from −30 °F (−34.4 °C) to 15 °F (−9.4 °C). These are great for cold windows.
Light: Full sun to partial shade is the optimum light exposure for this succulent. Provision of shade is necessary in times of extremely hot temperature to avoid getting sunburn.
Soil: It will surely survive if given porous soil mix of grits and loam with great seppage characteristics. It is incline towards neutral soil pH.
Fertilization: There seems no need for fertilizer application.
Pests and Diseases: Unicorn is susceptible to crown and root rot if too much moisture prevails. Other than that, no infestations are known. It is quite resistant to common pest and diseases.
Remarks: Unicorn is a prolific offsets producers. They produces lots of counterbalances in stolons so repotting is required to avoid overcrowding. It is ideal to repot amid the warm season. To repot a succulent, ensure the soil is dry before repotting. Gently pull off the plant from the pot and thump away the old soil from the roots to expel any decayed or dead roots. Treat any cuts with a fungicide. Put the plant in its new pot and fill it with gardening soil. Evenly spread the roots out as you repot. Leave the plant dry for a week or so, at that point start to water delicately to decrease the danger of root spoil.