10+
RHS Gold Medals
500+
Rare Varieties
15k+
Happy Customers
Skip to product information
x Semponium 'Sienna'
£12.50
Pickup available at Shop location
Usually ready in 5+ days
PBR Protected
Introducing the beautiful intergeneric hybrid ×Semponium ‘Sienna’, the world's first official cross between Sempervivum and Aeonium, specifically a cross of Sempervivum ‘Green Ice’ and Aeonium ‘Ice Warrior’.
x Semponium 'Sienna' is a fast-growing succulent that grows into a stunning conical shape. It produces a large central rosette with layers of evenly spaced smaller rosettes. The leaves are slender, with the ends of the foliage becoming more spoon-shaped. One of the most outstanding features of the x Semponium 'Sienna' is the colour. It has beautiful Sienna reds in the spring and summer, intensifying and becoming a vibrant electric red when positioned in strong sunlight. This succulent is one of the most attractive hybrids we have ever created at the nursery. The way the leaves illuminate when the sunlight hits them is like nothing else: a genuinely stunning plant worthy of a prime location in the garden.
Awarded Plant of the Month for June 2024.
Ideal Environment for x Semponium 'Sienna'
Full Sun
Indoor Bright
Plant Characteristics
Difficulty
Beginner
Indicates how easy or challenging this plant is to grow and maintain.
Growth Form
Shrub-like
Describes the natural shape and growth habit of the plant.
Growth Rate
Moderate
How fast the plant grows under ideal conditions.
Minimum Temperature
2°C
The lowest temperature this plant can tolerate without damage.
Maximum Height & Spread
30 cm x 30 cm
The typical maximum dimensions this plant can reach when mature.
Featured Colour
Green and Red
The predominant colours displayed by this plant.
Special Status
PBR Protected
This plant variety is protected by Plant Breeders' Rights.
How to Care For x Semponium 'Sienna'
How often should I water x Semponium 'Sienna'? 💦 +
The x Semponium 'Sienna' would like to be soaked and left to partially dry, usually between once and twice per week in the peak growing season. It is advised to reduce watering when plants are dormant, usually during a heatwave, and to significantly reduce/ stop watering when conditions are frosty. If grown indoors over winter, water the plant lightly and directly to the roots when the plant is thirsty.
What soil is best for x Semponium 'Sienna'? 🪴 +
x Semponium 'Sienna' needs free-draining soil to thrive. Use a specialist cactus and succulent mix, or blend compost with horticultural grit, sand, or perlite. This keeps the roots aerated and prevents excess moisture, which can cause root rot. Adding a gritty top-dressing not only looks attractive but also keeps foliage dry, reduces fungus gnats, and helps regulate moisture. Healthy soil is the foundation of successful succulent care.
Does Crassula x Semponium 'Sienna' need fertiliser? 🌱 +
Yes, but only in moderation. Feeding helps maintain healthy growth and strong colours. Use a diluted liquid fertiliser for succulents or a balanced cactus feed during the growing season (spring and summer). Apply every few weeks when watering. Avoid fertilising during dormancy in winter, as plants are resting and don’t need extra nutrients. Too much fertiliser can cause weak, leggy growth, so always err on the side of less.
You may also like
Frequently Asked
Questions
Grown by us
All of our plants are grown in-house at our nursery in Cornwall, where they are nurtured from the very beginning by our expert team.
From seedling to maturity, each plant is carefully raised with patience and passion, ensuring strong roots, vibrant growth, and the highest quality. Because they’re grown by us in Cornwall, every plant arrives at your door healthy, unique, and full of character.
Perfectly giftable
Succulents make thoughtful, lasting gifts for any occasion. Whether it’s a birthday, celebration, or a treat for someone special, our succulents are a unique way to share living beauty.
You can choose to leave a gift note, or delivery instructions, in the cart section. You can also choose a seperate delivery address at checkout so the gift is delivered straight to the lucky recipient.
Expert advice
Our carefully written care guides give you all the knowledge you need to grow the best-looking, healthiest plants possible. From winter care and watering advice to seasonal tips, we provide the information you need to help your succulents thrive.
