How to grow and care for a polka dot plant

How to grow a polka dot plant

Grow polka dot plants in peat-free house-plant compost in a warm and humid environment that has bright but indirect sunlight. Water sparingly and remove developing flowers to keep plants looking their best. In summer, feed fortnightly with a liquid house-plant fertiliser.

Where to grow polka dot plants

Grow polka dot plant in a warm and humid environment, with a minimum temperature of 15ºC and a humidity level of around 50 per cent. A warm bathroom or terrarium is ideal, as long as there is sufficient light – polka dot plants thrive in bright but indirect sunlight and can stop growing if conditions are too dark.

How to plant a polka dot plant

The polka dot plant needs a rich, free-draining potting mix. Plant it at the same depth it was in its original pot and water well, allowing excess water to fully drain away.

How to care for a polka dot plant

During the growing season, water your polka dot plant sparingly, when the top 1.5cm of soil has dried out. Reduce watering in winter and increase again once you see the first signs of growth in spring.

Feed once a month with a general-purpose liquid fertiliser. Remove any developing flowers to keep the plant looking its best.

How to propagate a polka dot plant

You can propagate polka dot plants from stem cuttings rooted in water. Just follow this simple step-by-step guide:

• Using secateurs or scissors, cut 10cm sections of stem from the main plant. Remove the leaves on the lower half of the stem
• Place the cuttings in a glass or jar of water, ensuring that only the lower portion of the stem is submerged
• Keep the cuttings in a bright, warm spot and replace the water weekly to keep it fresh
• Roots should develop within a few weeks. When they are about 10cm long, pot up the cuttings into peat-free, free-draining house-plant compost

Pests and diseases

Pests Polka dot plants may be affected by house-plant pests such as aphids, red spider mite and fungus gnats. Aphids are best removed by hand. The red spider mite thrives in dry conditions, so misting to increase humidity should stop it from breeding. Fungus gnats can be deterred by adding a thick layer of gravel over the surface of the compost.

Fading leaves Too much or too little light can cause leaves to lose their colour – direct sun can cause the variegation to fade.

Brown or drooping leaves These are signs of a lack of water or humidity. Water sparingly and move the plant to a more humid environment or mist with water to raise ambient humidity.

Yellow leaves This is a sign of overwatering – stop watering immediately and check the roots for signs of root rot. It may be necessary to repot the plant, removing any rotting bits of rootball.

Varieties of polka dot plant

Hypoestes White – a cheerful variety with green and ivory variegation. Height x Spread: 30cm x 40cm

• Buy Hypoestes White from Thompson & Morgan

Hypoestes Pink – pink foliage splashed with dark-green variegation. H x S: 30cm x 30cm

• Buy Hypoestes Pink from Topical Glass

Hypoestes Red – dark pink to red leaves with contrasting dark-green variegation. H x S: 30cm x 30cm

• Buy Hypoestes Red from Thompson & Morgan