Heath fritillary
The rare heath fritillary was on the brink of extinction in the 1970s, but conservation action turned its fortunes around. It is still confined to a small number of sites in the south of England, however.
Heather
Heather is also called 'ling'. Look for it on our heaths, moors and bogs, where its delicate, loosely arranged pink flowers attract all kinds of nectar-loving insects.
Hedge bindweed
A climbing plant of woodlands, hedgerows, riverbanks and gardens, Hedge bindweed can become a pest in some places. It has large, trumpet-shaped, white flowers and arrow-shaped leaves.
Hedge mustard
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.
Hedge woundwort
The unpleasant, astringent smell of Hedge woundwort makes this medium-sized plant of woodlands, hedgerows and roadside verges stand out from the crowd.
Heineken fly
A common hoverfly, the Heineken fly has a distinctively long snout that enables it to take nectar from deeper flowers, reaching the parts other hoverflies cannot reach! It frequents hedgerows, gardens and woods.
Hemlock
A notoriously poisonous plant, hemlock produces umbrella-like clusters of white flowers in summer. It can be found in damp places, such as ditches, riverbanks and waste ground.
Hemp-agrimony
Also known as 'Raspberries and Cream', Hemp-agrimony displays 'frothy' clusters of tiny, pink flowers on top of long, reddish stems. Its leaves look like those of Hemp, although it is not related.
Hen harrier
The hen harrier has been severely persecuted for taking game species and has suffered massive declines in numbers as a result. Thankfully, conservation projects are underway to reduce conflict surrounding its controversial prey.
Herald
This unmistakable moth spends the winter as an adult, tucked away in a sheltered spot like a cave or outbuilding.
Herb-paris
Herb-Paris has four oval leaves set in a cross, with an understated crown of yellow-green flowers rising from the middle. This makes it quite a distinctive plant of ancient and damp woodlands on chalky soils.
Herb-robert
Herb-robert is a low-growing plant, with small, pretty, pink flowers. Look for it in shady spots in woodland, hedgerows and coastal areas.