5 essential … plants for winter seedheads

Even in death plants with interesting seed heads that stand well over autumn and winter manage to look strikingly beautiful especially on those rare but magical early mornings when they are coated in hoare frost and sparkle in the sun.  Not only do they look good, but their seeds provide a valuable source of food for birds, especially in cold winters when other foods may be scarce. With all this in mind, it’s important to stop and think whether you might be depriving your garden of some winter wonder before wielding the secateurs in the autumn tidy up.

Teasel (Dipsacus fullonum) is a native British wildflower which makes a strong architectural statement in a sunny relaxed planting scheme.  In summer, spiny pale green, thistle-like flower heads rise on strong stems from prickly rosettes of leaves and from mid to late summer are covered in tiny pale lilac or white flowers.  The flowers act as a magnet for bees and the seed heads have the same effect on goldfinches whilst also looking wonderful right through the autumn and winter months.

teasels-janet-bligh

These are biennials, flowering in the second season of growth and once established they will self-seed quite prolifically so will need to be controlled by weeding out unwanted seedlings.  Teasels are not fussy about soil type and are happy in full sun or part shade.  Height and spread: 150 cm x 50cm.

A dramatic perennial that is also a valuable addition to the winter border, Phlomis russeliana provides a strong focal point from late spring to early autumn owing to its long flowering period.

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Whorls of pale yellow flowers are produced at intervals along tall, erect stems above large heart shaped leaves and provide striking silhouettes throughout winter.

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Again, bees love the flowers so this is an ideal plant for the wildlife garden and also works well in Mediterranean or Prairie style plantings and gravel gardens.  Phlomis russeliana is a vigorous, spreading perennial that needs room to grow and will do so happily on any reasonably fertile, well-drained soil.  Height and spread: 90cm x 75cm.
Gardening tips: Shorten any frost damaged stems in mid-spring, cutting back to just above a healthy bud.  Remove any weak or diseased stems to ground level.

Fennel (Foeniculum vulgare) produces clouds of soft green, feathery foliage that smell and taste of aniseed and are delicious in salads and fish dishes.

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In late summer large flat umbels of sulphur yellow flowers attract hover flies and are followed by aromatic seed heads that are eaten by birds, but whose skeleton still makes an attractive and imposing presence in autumn and winter on stems up to 2m tall.

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Bronze fennel, which has the same characteristics but with beautiful bronze leaves, looks particularly striking grown with Verbena bonariensis which also maintains a fairly sturdy winter outline. Fennel likes a sunny position on fertile, loamy, well-drained soil, but will grow in partial shade where it produces ample foliage but fewer flowers.  Height and spread: 1.5-2m x 45cm (at the base).
Gardening tips: Self-seeds prolifically especially in very hot weather so weed out unwanted seedlings regularly.

The seed heads of biennial Honesty (Lunaria annua) are truly beautiful.  Rounded to oval in shape, the cases are dainty, paper thin and silvery translucent with the flat black seeds clearly visible inside.  The dried stems and seed heads of Honesty are much more fragile and delicate than those of the other perennials mentioned so far, but remain on the plant well into autumn and look wonderful especially when backlit by the sun.

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White or lilac flowers in May and June precede the seed heads and are very attractive to bees and butterflies making this another good candidate for the wildlife garden.  Honesty flourishes in sun or partial shade on fertile, moist, well-drained soil where it will self-seed and naturalise happily.   Height and spread: 90cm x 30cm.
Gardening tip: Pinch out growing tips in spring to encourage bushier growth.

Many ornamental grasses provide excellent structure in autumn and winter and among these is Miscanthus sinensis ‘Yakushima Dwarf’ which makes an ideal front of border feature for winter interest.   Its short, stout tufts of green leaves with white midribs form clumps about 1m tall.  In mid to late summer fluffy pink, tassle-like flowers emerge from the centre of the clump, ageing to silver and persisting long into the winter months.  This grass makes an excellent specimen plant in a small garden and looks very effective planted in generous drifts in larger borders.  I grew it as a hedge in my last garden and it became a real feature in autumn when the low sunlight shone through the flowers.

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Happiest and most free flowering on an open, sunny site it will also tolerate some shade and performs well on a wide range of soils.  Height and spread when flowering about 1.5m (but if you want less spread it’s easy to hold in the centre of the plant with supports or tie with string).
Gardening tips: Cut foliage down to the base in early spring.  Large clumps can be divided in March to April.

Picture credits:  Janet Bligh, Firgrove Photographic, Anne Burgess

Jobs for the productive garden in June

Here are some seasonal jobs for you to carry out this month if you’re growing fruit, vegetables, herbs and flowers for cutting

CUTTING GARDEN

Sweet peas
Cut sweet peas regularly to encourage more flowers.  Water well in dry spells.
Plant out any hardened off annuals you’ve sown in pots – for example Calendula (Marigold), sunflowers and Nasturtium.

Plan ahead for next year’s cut flowers and sow seeds of biennials such as Dianthus barbatus (sweet williams) now.

KITCHEN GARDEN
Harvest early potatoes when they are ready (when your plants begin flowering).

Sow salad vegetables, and herbs such as basil and coriander at regular intervals (every 2-4 weeks)for a continuous supply during the summer.

Herbs such as Angelica and Valerian will scatter seeds all over the place, so cut back flowered stems before that happens – assuming you don’t want the seedlings everywhere of course!

Climbing beans

There is still time to plant greenhouse crops such as peppers, tomatoes, melons, cucumbers, aubergine. Plant out your climbing beans.

Shade and ventilate greenhouses.

Remove the side shoots of cordon tomatoes as and when necessary.

strawberries

As strawberries start to ripen, put down a layer of straw to keep fruit clean, keep weeds down & make life difficult for slugs.  Tie in Raspberry and Blackberry canes. Net strawberries and currant bushes to keep the birds off the fruit.

netting redcurrants

Continue picking rhubarb until end of the month, then let plants grow naturally to build up their strength for the next season.

Prune vigorous growth on wall trained plums, cherries, apples and pears.  Cut out badly placed and weak shoots as this will encourage growth and reduce the risk of disease.  Thin out heavy crops of apples, pears and plums.

PESTS AND DISEASES
Plants can suffer from powdery mildew in hot, dry conditions.  Spraying with a solution of one part milk to nine parts water has shown to be an effective remedy on squashes and vines.

Watch out for bright red lily beetles, white fly, black fly and greenfly – and deal with them however you see fit.

Calendula

Protect Dahlias, Marigolds and emerging seedlings from slugs.  Remove early caterpillar infestations before they get established.
Photos:  Janet Bligh & Firgrove Photographic