Spathiphyllum 'Diamond Variegated' is an elegant and unusual variegated form of the classic peace lily. It has glossy, lance-shaped leaves marbled with creamy white, soft green and deeper green tones. Each leaf is unique, with some heavily splashed in white whilst others display finer streaks and patches of variegation.

The variegation gives the plant a much brighter, more decorative appearance than a standard Spathiphyllum, whilst still keeping the graceful, arching growth habit that peace lilies are known for. Mature plants usually reach around 40–60cm tall and wide indoors.

When happy, Spathiphyllum ‘Diamond Variegated’ may also produce the familiar peace lily flowers – elegant white spathes surrounding a pale central spadix. Against the variegated foliage, the flowers appear especially striking.

Because of its marbled leaves, this plant would fit beautifully into your Variegated Houseplant Collection alongside Maranta ‘Variegated’, Ficus benjamina ‘Variegata’ and Pothos ‘Marble Queen’.

Detailed Care Guide

Light

Spathiphyllum ‘Diamond Variegated’ prefers bright, indirect light.

Because of its variegated leaves, it needs a little more light than a standard green peace lily to maintain the white patterning. A position near an east-facing window or slightly back from a brighter south or west-facing window is ideal.

Avoid strong direct sun, which can scorch the white areas of the leaves.

Too little light may cause:

• Slower growth
• Reduced variegation
• Fewer flowers

Watering

Keep the compost lightly moist but not soggy.

• Water when the top 2–3cm of compost feels dry
• Water thoroughly, then allow excess to drain away
• Never leave the plant sitting in water

Peace lilies are known for drooping dramatically when they are thirsty, but it is best not to let this happen too often, as repeated wilting can stress the plant.

Reduce watering slightly during winter.

Humidity

Spathiphyllum ‘Diamond Variegated’ prefers moderate to high humidity, ideally 50–70%.

It adapts reasonably well to normal household conditions, but higher humidity will help keep the leaves looking their best and prevent brown tips.

You can increase humidity by:

• Grouping it with other plants
• Using a pebble tray
• Positioning a humidifier nearby

Temperature

Keep this plant between 18–26°C.

Avoid:

• Temperatures below 15°C
• Cold draughts
• Sudden temperature changes
• Placing it beside radiators or heaters

Compost

Use a light, moisture-retentive but well-draining compost.

A suitable mix is:

• 2 parts houseplant compost
• 1 part perlite
• Optional small amount of orchid bark

This will keep the roots evenly moist without becoming waterlogged.

Feeding

Feed every 2–4 weeks during spring and summer with a balanced liquid houseplant fertiliser at half strength.

Do not overfeed, as this can lead to brown tips on the leaves.

Repotting

Repot every 1–2 years in spring if needed.

Move it into a pot one size larger when:

• Roots are growing through the drainage holes
• The plant dries out very quickly
• The plant has become crowded

Spathiphyllum ‘Diamond Variegated’ generally prefers to be slightly snug in its pot.

Common Problems

• Brown leaf tips: Low humidity, inconsistent watering or too much fertiliser
• Yellow leaves: Usually caused by overwatering
• Wilting leaves: Underwatering or root problems
• Loss of variegation: Not enough light
• Brown patches: Direct sun scorching the white sections

Pet Safety

Spathiphyllum ‘Diamond Variegated’ is toxic if eaten and should be kept away from pets and children. The leaves and stems contain calcium oxalate crystals which can cause irritation and stomach upset if consumed.