Red catchfly is another plant I came across on my trip to England back in June when I was walking along the canal close to where I grew up. This clump-forming, erect perennial is a herb that can reach 80cm tall. Its a member of the Caryophyllaceae family and a native of Britain as well as Europe. Its binomial name, Silene dioeca, has the following meanings:

• Silene-the feminine form of Silenus who was a Greek deity of woodland. He was described as being coated in foam. This refers to the fact that some Silene species are themselves covered in a form of sticky foam.
• Dioeca-refers to the fact that the male flowers (the reproductive organs)are on one plant, while the female flowers are a seperate plant.

The leaves are broadly ovate to 80mm long by 30mm wide. They are covered in hairs. They are oppositely arranged on the branching stems. It is a semi-evergreen plant with a bushy habit. The flowers are pink in colour with five notched petals. The male and female flowers are on seperate plants. Flowers are pollinated by bees and hoverflies.

The soil type most appropriate for red catchfly is chalky, loam or sandy, provided that the soil is moist but will-drained. It’s also happy in acid, alkaline and neutral soils. While red catchfly is happy in partial shade in an easterly, westerly or southerly aspect, it does need to be in a sheltered position. Habitats that the red catchfly are found in include woodlands and hedgerows, clearings, rocky slopes and screes on the already mentioned well-drained soils. Red catchfly can be found to elevations of up to 1000 metres above sea level and is a very cold hardy plant-it can deal with temperatures down to -20 degrees Celsius once the plant is fully dormant.

Seed can be sown in early spring in a greenhouse or cold frame and potted on and planted outside as when they are big enough. Plants can also be divided in spring.

A very pretty little plant that was a bit of cheerful colour on my walk along the canal in June 2025.

https://plantnet.rbgsyd.nsw.gov.au

https://www.rhs.org.uk/plants/17328/silene-dioeca/details

https://temperate.theferns.info/plant/silene+dioeca

RHS A-Z Encyclopedia of Garden Plants, 2016, 4th Edition, Editor in Chief Christopher Brickell, Dorling Kindersly, 2016