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Yellow Rattle

Rhinanthus minor

One of our most important meadow wild flowers.  It is hemi-parasitical on grasses and so weakens them, thereby giving other wild flowers a chance to compete and gradually establish themselves. A wildflower meadow hero!

How to spot it

An erect plant with longish stems without many leaves. When the yellow tubular flowers fade, the calyx behind them becomes a silvery sphere in which the seeds ripen – the rattle.

Where it grows

On nutrient-poor grasslands, including permanent pastures hay meadows and dunes. Also on roadsides and waste ground.

Best time to see

In flower from May to July

How’s it doing?

Yellow rattle underwent a marked decline in Britain throughout the 20th century, thought to be a result of changes in farming practices.

3 things you might not know

  • It used to be said that when the yellow rattle was in flower, the hay was ready for cutting
  • Cattle love yellow rattle – when let into a field it is the first thing they will eat
  • The plant’s leaves make a yellow dye

Other Species

Adder’s Tongue Spearwort

Adder's Tongue Spearwort

Ranunculus ophioglossifolius



Smyrnium olusatrum

Basil Thyme

Basil Thyme

Clinopodium acinos