Pink Flowers

Centaury (Centaurium erythraea)

Its long-flowering clusters of small star-shaped pink flowers provide a reliable nectar source for a range of insects, especially butterflies, solitary bees and hoverflies from June to September. Its flowers close in wet weather to protect their pollen from being washed away. The blooms only open fully in bright sunshine and tend to close entirely by the afternoon or early evening.

Field Bindweed (Convolvulus arvensis)
The nectar of the trumpet shaped flowers is popular with pollinators and its leaves are the food source for a number of moths including the White Plume Moth and  the Convolvulus Hawk Moth. The Four-Spotted Moth larvae specifically target Field Bindweed preferring its buds and flowers
Hedgerow Cranesbill (Geranium pyrenaicum)
Its pinky-mauve flowers bloom from spring well into autumn and are highly attractive to bumblebees and other pollinators. It flowers from spring right into autumn so provides a food  source when other wildflowers have stopped flowering and its leaves are an essential food source for the caterpillars of the Brown Argus butterfly.
Hemp Agrimony (Eupatorium cannabinum)
Its frothy pink flower clusters appear from July to September and are very attractive to all kinds of insects, including butterflies like the Red Admiral and Small Tortoiseshell. Its common name comes from its leaves resemblance to hemp, although it is not related to it.
Herb-Robert (Geranium robertianum)
The small pink star-shaped flowers provide a vital food source for pollinators like bees, butterflies and hoverflies. The foliage serves as larval host for specialised moth species, such as the Barred Carpet moth, the Geranium Plume moth and the Elephant Hawk-moth.
Knotgrass (Polygonum aviculare)
Knotgrass supports over 100 species of insect feeders, including caterpillars of the declining Knotgrass Moth. Other moths which utilise Knotgrass include the Bordered Gothic, a highly endangered species and a priority in the UK Biodiversity Action Plan, the Blood Vein  and the migrant Vestal. Knotgrass seeds are a highly prized food source for farmland birds. Because of this it is frequently called “Birdweed”.
Sainfoin (Onobrychis viciifolia)

Sainfoin produces beautiful pink-red flowers that bloom over an extended period (from May to September) providing a reliable nectar source for both short and long-tongued bumblebees, honeybees and butterflies. It produces more nectar and honey than almost any other legume making it a vital plant for maintaining threatened wild bee populations.

Soapwort (Saponaria officinalis)
Soapwort’s open blooms, rich in nectar, are heavily frequented by bumblebees and day flying insects. Because the tubular flowers open fully in the evening and release a stronger, clover-like fragrance, they are particularly attractive to night-flying insects like Hawk-moths and Owlet moths. The foliage provides food for moth larvae, including that of the Lychnis, Hummingbird Hawkmoth, Cabbage moth and a species of casebearer moth whose larvae are highly specialised and feed only on soapwort.
Valerian (Valeriana officinalis)
The plant’s sweet-scented flower clusters are highly attractive to solitary bees, flies and hoverflies especially the genus Eristalis. This is a genus of hoverflies that look exactly like honeybees. They use mimicry to copy the appearance of honeybees to scare off predators, even though they are completely harmless and cannot sting. Valerian leaves serve as a food source for the larvae of a small number of butterfly and moth species, including the Large Yellow Underwing and the Grey Pug.
Yarrow (Achillea millefolium)

Pink or white flowers. Because it blooms across an exceptionally long season, from early Summer till late Autumn and supports over a hundred different insect species it is an immensely valuable food source. Its flat- topped flower clusters act as an accessible landing platform and so are highly attractive to short- tongued insects that struggle with deep flowers, such as hoverflies, solitary bees and beetles. The feathery leaves are a primary food source for the larvae of various lepidoptera including the Large Skipper butterfly and the Belted  Beauty moth. Yarrow is famously favoured by ladybirds, lacewings and predatory wasps. These insects feed on the pollen and nectar before hunting common garden pests like aphids.