About 250 species of flowering plant, grasses, sedges, rushes and ferns have been recorded on the reserve, including many rare Red Data Book species.

The first to come into flower are the Spring 'ephemerals', tiny flowers which set seed and die annually. These can be seen in April and into May and include COMMON WHITLOW GRASS, DANISH SCURVYGRASS, EARLY FORGETMENOT, SPRING VETCH, RUE LEAVED SAXIFRAGE, SEA MOUSE-EAR and LITTLE MOUSE-EAR.

Progressively more species come into flower in late May, June and July. The large slack at the south end of the reserve has MAYFLOWER, WATERCRESS, TUFTED FORGETMENOT, LESSER SPEARWORT, MEADOWSWEET, MARSH WILLOWHERB, MARSH and WATER HORSETAIL, MARSH PENNYWORT and WATER MINT. Several of these grow in other slacks which tend to dry out more quickly in spring. Plants in these include ADDERS TONGUE FERN (three colonies), VARIEGATED HORSETAIL (two sites), GRASS OF PARNASSUS (abundant in late summer - autumn), ROUND LEAVED WINTERGREEN, YELLOW BIRDS' NEST, SEA ARROW-GRASS, MARSH HELLEBORINE, EARLY MARSH ORCHID, HYBRID MARSH-SPOTTED ORCHIDS, COMMON COTTONGRASS, SELF-HEAL.

The low dunes with areas of MARRAM GRASS, CREEPING WILLOW and DEWBERRY support a wide range of plants, including DUNE CABBAGE (a national rarity) HEATH DOG VIOLET, WILD PANSY, MILKWORT, FAIRY-FLAX, COMMON STORKSBILL, RESTHARROW, HOP TREFOIL, BIRD'S-FOOT TREFOIL, COMMON VETCH, YELLOW STONECROP, EVENING PRIMROSE, COMMON CENTAURY, SEASIDE CENTAURY, YELLOW-WORT, GERMANDER SPEEDWELL, YELLOW RATTLE, EYEBRIGHT, WILD THYME, HAREBELL, LADY'S BEDSTRAW, RAGWORT, CARLINE THISTLE, COMMON CAT'S-EAR, AUTUMN HAWKBIT, LESSER HAWKBIT, GOATSBEARD, MOUSE-EAR HAWKWEED, UMBELLATE HAWKWEED, DUNE HELLEBORINE (a national rarity), GREEN FLOWERED HELLEBORINE, BEE ORCHID, PYRAMIDAL ORCHID, DUNE FESCUE, SAND CAT'S TAIL.

There are two main areas of the invasive shrub SEA BUCKTHORN.

Many of these plants also grow on the adjacent coastal S.S.S.I. dunes and SEA HOLLY and SEA SPURGE grow in these higher yellow dunes.

In addition, about 25 species of garden flowers have established themselves mainly at the St. Annes end of this reserve. These include BLOODY CRANESBILL, which is a wild sand dune plant elsewhere.