Mesembrayanthemum seeds – ice plant

Mesembryanthemum ‘Harlequin’ is an easy to grow annual bedding flower which produces colourful blooms throughout the summer. The daisy like flowers come in shades of red, magenta, pink, yellow, white and orange.

 

Mesembryanthemum can tolerate drought and sandy soil and is a useful plant to brighten up rock gardens, walls and paths.

 

When to sow Indoors February to May, outdoors in May to June once all risk of frost has passed.

Where to sow Sow indoors on surface of moist compost filled pots or trays and cover the seeds with 0.5cm (1/4in) of compost or vermiculite. Place in a warm position (temperature of 15-20°C (60-68°F) is ideal).

Sow outdoors direct in to a well prepared seedbed. Sow the seeds sparingly in rows 25 – 30 cm apart. Cover the seeds with 0.5cm (1/4in) of fine soil and water well.

What to do next For seeds sown indoors, when seedlings are large enough to handle, transplant into 7.5cm (3in) pots or trays and grow on in cooler conditions.

When all risk of frost has passed, acclimatise seedlings to outdoor conditions over 7 to 10 days. Then transplant into final growing position planting them 30cm (12in) apart.

Thin the seedlings sown direct outdoors out so they are 30cm (12in) apart. Carefully replant thinned plants to fill any gaps.

Water well until plants are established.

Deadhead to prolong flowering and encourage new flower buds.

Flowering period June to September.

Uses Bedding plants, hanging baskets, borders, rock gardens, containers, coastal gardens, patio’s, between flagstones, growing in walls

Height 10cm (4in)

Spread 30cm (12in)

 

Commonly known as the ‘Livingstone Daisy’, Mesembryanthemum criniflorum is a popular half-hardy annual noted for its brightly coloured blooms and glistening succulent leaves. While the botanical name Mesembryanthemum criniflorum is the most widely used within the gardening industry, it is currently classified as Dorotheanthus bellidiformis.

 

 

Mesembryanthemum seedlings

Despite its exotic looks it is surprisingly easy to grow from seed. However to make the most of the shorter northern European growing seasons, sow mesembryanthemum seed under protection from late winter to spring.

 

Using modular trays filled with a good quality, well-drained compost such as John Innes ‘Seeds and Cutting’, sow the seeds on the surface at an approximate rate of 10 seeds per module. Do not cover the seeds as they require the presence of light to help initiate germination. Instead gently firm down the compost without sinking the seeds into the compost.

 

If you are watering from the surface you may wish to add a thin layer of vermiculite to prevent the seeds from being washed around the seed tray. Alternatively water from the base so that water naturally rises through the compost. Once the surface of the compost darken remove water from the base of the seed tray.

 

 

Mesembryanthemum flowers

Place the seed tray inside a heated propagator at approximately 15-20 degrees Celsius. Alternatively seal the tray inside a clear, polythene bag. Keep the compost damp but avoid direct sunlight. You can expect germination to occur between 15-21 days.

 

Once the seedlings emerge, remove them from the propagator or polythene bag but they will still need to be kept in a warm, bright, frost-free position.

 

When the roots have become established in the modules they can be popped out and potted on into 9 cm pots and grown on in cooler conditions for a further 10-15 days to harden off. They can be planted outside into their final position once all risk of frost has passed. Plant Mesembryanthemum criniflorum plants 30 cm apart. To flower they will require as much of the available sunlight as possible. They will perform best planted in a light well-drained soil.