Greater celandine is a very common plant that spreads easily in the garden, on waste ground and in hedgerows. It is considered a weed, but the small, yellow flowers provide nectar for insects.

Hedge mustard is a tall plant with small, yellow flowers atop tough stems. It likes disturbed ground and grows in hedgerows and roadside verges, and on waste ground.

Arrowhead is an aquatic plant of shallow water and slow-moving waterways. In bloom over summer, it displays small, white flowers, but it is the arrow-shaped leaves that are most distinctive.

The yellow, star-like flowers of bog asphodel brighten up our peat bogs, damp heaths and moors in early summer, attracting a range of pollinating insects.

Creeping jenny is a low-growing plant of wet grasslands, riverbanks, ponds and wet woods. It has cup-like, yellow flowers and is a popular choice for garden ponds.

Their empty, delicate pink or yellow shells can often be found washed up on beaches, but the animals themselves live buried in the sand all around the coasts of the UK.

Dyer's greenweed is a classic plant of hay meadows, heaths and open woodlands. It has upright stems with loose clusters of bright yellow, pea-like flowers in summer.

These little sea snails are found amongst the seaweed on rocky shores around much of the UK. They come in lots of different colours, from bright yellow to chequered brown!

As its name suggests, the scarlet elfcup is a bright red, cup-shaped fungus. It is widespread, but scarce, and can be found on fallen twigs and branches, in shady, damp places.

Water-cress has become so popular as a salad addition that it is now cultivated on a wide scale. In the wild, it grows in shallow, fast-flowing streams and is an indicator of clean water.

Broom is a large shrub of heaths, open woodlands and coastal habitats. Like gorse, it has bright yellow flowers, but it doesn't have any spines and smells of vanilla.