Sempervivum ‘Sirius’

Posted by: Cassidy Tuttle | Updated: March 29, 2022

This beautiful Sempervivum forms a large green rosette. The tips of the leaves flush red when it is “happily stressed,” adding a lot of color to your garden. Although it is monocarpic, the “Hen” puts off many chicks before it dies.

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Quick Look:

Full sun to partial shade
Typical water needs for a succulent
Plant grows up to 3″ (7.6 cm) tall
Plant grows up to 4″ (10 cm) wide
Zone 5a (Minimum -20° F | -28.8° C)
Winter hardy
Propagation by offsets
Non-toxic to humans and pets
Winter dormant

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Care and Propagation Information

General Care for Sempervivum ‘Sirius'

Sempervivum ‘Sirius' is a great addition to rock gardens or cold-hardy succulent gardens. As it grows, it produces offsets, spreading out. ‘Sirius' is resiliant to many pests.

Watering

Sempervivum ‘Sirius' has typical watering needs for a succulent. It's best to use the “soak and dry” method, and allow the soil to dry out completely between waterings.

Where to Plant

‘Sirius' is cold hardy, and is able to withstand very cold winter temperatures. It does well in full to partial sun. Plant in an area of your garden that gets 6 hours of sunlight a day. It does not thrive indoors.

How to Propagate Sempervivum ‘Sirius'

Sempervivum ‘Sirius’ is perfect for outdoor succulent growers, and is very cold hardy. It propagates from offsets (chicks).

Offsets

‘Sirius’ will produce small rosette offsets. Cut the offsets off from the main stem with a sharp, sterile knife or scissors. Allow the offsets to dry for one to two days before laying on well-draining soil.

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