Hi, friends! Today I will tell you about the sun requirements of Sempervivum.
⚡QUICK ANSWER: Hens and Chicks (Sempervivum) grow best in full sun, but they can also tolerate partial shade. For the brightest colors and compact growth, aim for at least 6 hours of direct sunlight per day.
☀️Full Sun
Full sun conditions occur when a plant is situated in an area without shade, receiving 10-12 hours of direct sunlight daily. In winter, this duration may be shorter.
As previously mentioned, most sempervivums show a preference for full sun. Varieties with large, juicy leaves exceeding 2 inches in diameter particularly benefit from ample sunlight. This is also true for varieties that are brightly colored.
Consider the ‘Shocking Pink’ sempervivum as an example. In the first image, the plant is grown in partial shade, receiving inadequate direct sunlight. The result is an elongated rosette with upward-stretched leaves and a less vibrant color; the plant’s center appears greenish.
Contrastingly, the second image showcases the same ‘Shocking Pink’ variety, but grown in full sun, where it gets 12 hours of direct sunlight. Noticeable differences include a brighter color, increased leaf count, horizontally oriented leaves, and a tighter rosette formation.
🔥Sempervivum sunburn
It’s important to address the possibility of sempervivum experiencing sunburn, a common issue under certain conditions. We’ll explore when and why this happens, how to prevent it, and what steps to take if your plant gets sunburned.
Sunburn in Hens and Chicks often occurs when a plant, previously grown in partial shade, is suddenly placed in full sun. This abrupt change can lead to noticeable spots on the leaves, indicating damage.
Transplanting sempervivum from an indoor environment to an outdoor garden can also result in sunburn.
In cases of excessive sunlight, some sempervivum varieties may turn a pale yellow and shrink in size, though without visible leaf damage.
To prevent sunburn, it’s advisable to provide shade for the newly planted sempervivum for 2-4 weeks, gradually acclimatizing it to sunlight. Ensure the plant is well-rooted during this transition.
If your Hens and Chicks do get sunburned, there’s no need for excessive worry. The plant will typically recover if you follow these preventive steps and care guidelines.
Read also: How To Care For Sempervivum?
🌤️Partial shade
Partial shade refers to conditions where Hens and Chicks receive no more than 6 hours of direct sunlight daily, typically being shaded during the afternoon.
While most Sempervivum species are adaptable to full sun, they can also thrive in partial shade. However, certain species have distinct preferences between full sun and partial shade.
Sempervivum arachnoideum, for instance, does well with around 6 hours of direct sunlight per day. Placed in full sun, this species may experience tip burn and a reduction in rosette size.
The variety plays a role in sun tolerance. Larger Sempervivum arachnoideum varieties generally fare better in full sun and might only suffer in conditions of insufficient moisture. On the other hand, dwarf varieties of Sempervivum arachnoideum, like the Iwris, are more susceptible to excessive light.
Sempervivum globiferum presents its best appearance under partial sun, receiving 4-6 hours of direct sunlight. When planted in full sun, it may exhibit a pale green hue, and its rosettes tend to be more compact.
☁️Full shade
When Hens and Chicks receive no direct sunlight, this condition is typically known as full shade. This term also applies to situations where the plant grows under a tree canopy and only receives dappled sunlight.
It’s generally inadvisable to plant Hens and Chicks in full shade. Under these conditions, the plants tend to become elongated and weak, making them more susceptible to illness and potentially leading to their demise. From my experience, I haven’t encountered any sempervivum varieties that thrive in full shade.
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