Peace lilies (Spathiphyllum wallisii) are a beloved houseplant in the UK, prized for their glossy green leaves and striking white spathes. However, getting them to flower can sometimes be a challenge, even for experienced plant owners. A gardening expert has now shared a simple technique known as a ‘stress reset’ that may encourage reluctant plants to bloom.
According to professional gardener Chad Massura, if a peace lily is otherwise healthy but not flowering, a mild period of stress can trigger it to produce blooms. The method involves slightly reducing watering for a few weeks before returning to the normal routine. This mimics natural conditions that prompt the plant to flower.
Massura emphasises that the ‘stress reset’ should only be attempted after ensuring other factors are correct. These include consistent watering, adequate light (10-12 hours daily), suitable pot size, normal household temperatures, average or above-average humidity, and occasional fertilisation once or twice a year.
Overwatering is a common issue with peace lilies. Gardeners’ World advises watering only when the top third of the soil has dried out, and using a moisture meter can help gauge the need. Underwatering also causes problems, with symptoms such as brown, brittle leaves. When watering, allow excess water to drain away and empty the saucer to prevent root rot.
If a peace lily is too far gone from overwatering, repotting in fresh, dry soil may be necessary. With the right care—and the occasional ‘stress reset’—this popular houseplant can reward owners with its elegant white flowers throughout the year.
