Why Are My Orchid Leaves Turning Yellow?

If your orchid leaves are turning yellow, don’t panic. In many cases, yellow leaves are a natural part of an orchid’s life cycle. However, they can also be a sign that your Phalaenopsis orchid needs a little extra care.

Here are the most common reasons.

1. Natural Ageing

Older leaves naturally turn yellow before falling off. If only the bottom leaf is affected while the rest of the plant looks healthy, there is usually nothing to worry about.

2. Overwatering

Overwatering is one of the biggest causes of yellow orchid leaves. Roots that remain wet for too long can begin to rot, preventing the plant from absorbing nutrients.

Allow the potting mix to dry slightly before watering again, and always use a pot with good drainage.

3. Too Much Sunlight

Orchids love bright conditions but not direct sunlight. Strong afternoon sun can damage leaves, causing them to turn yellow or develop scorched patches.

Place your orchid in bright, indirect light for the best results.

4. Poor Root Health

Healthy roots are firm and green or silvery-grey. If the roots are brown, soft or mushy, root rot may be the cause of yellow leaves.

Inspect the roots regularly and repot the orchid if necessary.

5. Nutrient Deficiency

Feeding your orchid with a balanced orchid fertiliser every few weeks during the growing season helps encourage healthy leaves and beautiful blooms.

When Should You Be Concerned?

If several leaves turn yellow at the same time, or the plant looks weak, inspect the roots and review your watering routine. Early action can often save the plant.

With the right orchid care, most Phalaenopsis orchids recover well and continue producing beautiful flowers year after year.

If you’re looking for premium orchids or expert advice, explore Bernard Roche’s collection of luxury orchid arrangements and discover why we are trusted as an orchid specialist in London.