Seventy
species of Trifolium are recorded in Britain. These include
Hop Trefoil (T. campestre), Strawberry Clover (T. frageriferum),
Alsike Clover (T. hybridum), Crimson Clover (T. incarnatum),
Sulphur Clover (T. ochroleucon), Hungarian Clover (T.
pannonicum), Red Clover (T. pratense) and White Clover
(T. repens).
The
agromyzids Liriomyza
sativae and Liriomyza
trifolii, polyphagous pest species of ornamental and vegetable
crops occasionally intercepted at UK points of entry, are recorded
on Trifolium. Liriomyza
trifolii has been found under glass in England and Wales.
All populations have been and continue to be eradicated.