Summer's here kids

Slug

Slug, Peter McDermott, CC BY-SA

The long, warm, hazy days bring fields full of bright red poppies and verges dotted with ox eyed daisies; an abundance of flowering plants, swaying grasses, fragrant scents and wildlife to our gardens. Plant growth reaches a peak and nectar is plentiful, enticing a wealth of butterflies, bees and other pollinators. Moths are frequent visitors, many have fascinating, characterful names such as the Dingy Footman, the Beautiful Hook-tip or the Smokey Wainscot. On summer evenings bats are at their most active, feasting on the insects attracted to night scented flowers, garden ponds and open water. With longer, warmer evenings it’s the time of year to sit out, to enjoy the garden and its wildlife.

The wet June has meant slugs and snails are out in force, this can be very discouraging but there are plenty of natural methods to control molluscs that do not harm wildlife or present a risk to children: Watering soil in the morning so it is dry at night; clearing ground around vulnerable plants so molluscs have nowhere to hide during the day; encouraging natural predators such as birds, frogs, hedgehogs and beetles; raking soil to disturb eggs and reveal them for birds to eat; using beer traps or upside down citrus rinds to capture and destroy slugs and snails; spraying garlic solution on leaves; using copper tape around pots; placing salty seaweed around plants; using coffee grains or finely ground eggshells on the soil as molluscs find it too rough a surface; or using sheep’s wool pellets, an irritant, as an alternative to slug pellets.

In the garden

Star jasmine (Trachelospermum jasminoides)

Star jasmine (Trachelospermum jasminoides), i-am-jim, CC BY-SA

Flowering plants, many sweet smelling or brightly coloured, are the attractions of the month. Star jasmine (Trachelospermum jasminoides) a wonderfully fragrant, evergreen climber with clusters of star shaped white flowers, flourishes throughout July. Lavender (Lavandula) is often at its best with mauve clusters of perfumed flowers blooming on long stalks providing a mecca for bees and butterflies. Bowman’s root (Gillenia trifoliata) with its delicate five petalled flowers, dances between more sturdy plants. The tobacco plant (Nicotiana sylvestris) with fragrant, soft yellow, trumpet shaped flowers and evening primrose (Oenothera fructicosa) with large bowl shaped bright yellow flowers are both night scented, making them attractive to moths.

Great masterwort (Astrantia major)

Great masterwort (Astrantia major), Björn S…, CC BY-SA

The dense, brightly coloured clusters of garden phlox (Phlox paniculata), which will flower through until autumn; button shaped masterworts (Astrantia sp), which are happy in shady spots and do well as dried flowers; and the tall, lighter sprays of the purple top vervain (Verbena bonariensis) that sway gently and frame glimpses of planting through their stems; are all in bloom. Amongst the perennials the bold purple, pink or white slightly raggedy daisy like flowers and feathery foliage of cosmos (Cosmos bipinnatus) a free flowering annual plant, can be found. If grown from seed every year it can fill in any unexpected gaps in the borders.

It’s high summer for butterflies, which are becoming more common to spot day by day and joining the rest of the nectar loving hordes to feast on and pollinate the variety of plants on offer. Birds are still nesting, often with repeat clutches through July and the earlier batches of fledgling chicks are finding their wings. Aphids and other garden bugs are a reliable food source for fledgling birds but intense competition for food means topping up the bird feeders and providing fresh water too can be very helpful. Be alert for fledglings that may have left the nest and be unable to fly for a couple of days yet. Their parents will still be keeping an eye them so do not get too close unless they are very visible or in danger, in which case carefully reposition them somewhere close, high and sheltered, out of the way of prowling cats.

Ladybird larvae

Ladybird larvae, Magnus Hagdorn from UK, CC BY-SA

The more diversity of plants in the garden the better it is both for visual pleasure and also to attract as much beneficial wildlife as possible. This will keep a balance with the pests and predators that are inevitable invaders. Ladybird adults and larvae (Coccinellidae sp) are a frontline defense beetle that feed on aphids, thrips, whitefly and mites amongst other pests, with each of these little, rounded, spotty adult beetles able to eat up to 5000 aphids during their lifetime. A female ladybird will lay her eggs on the underside of leaves often near larval food such as aphids and the emergent larvae will munch on these and also wander some distance in search of food. Be aware that the flightless ladybird larvae look nothing like the adult and are often mistaken for a pest when in fact they are a great pest munching ally.

Sadly, the non-native Harlequin Ladybird (Harmonia axyridis) has been invading the country since 2004. It is much bigger and spottier than our native species and has spread rapidly and possibly outcompetes our homegrown ladybirds and other insect groups too. There’s more information at The Harlequin Ladybird Survey where you can help track their spread.

Planting summer containers

Bee feeding on marigold (Calendula)

Bee feeding on marigold (Calendula), Pauline Eccles, CC BY-SA

Even with only a windowsill, balcony or small back yard, colourful containers can help pollinators, provide culinary crops and brighten up your home. Tender perennials often flower for long periods and with regular deadheading, feeding and watering can last for months; try marguerite (Argyranthemum frutescens), vervain (Verbena) or petunia (Petunia). Herbs can grow well in containers and can also be used for cooking, try sage (Salvia officinalis), thyme (Thymus sp) or oregano (Oreganum vulgare). Annual bedding plants such as nasturtiums (Tropaeolum), marigolds (Calendula), blanket flowers (Gaillardia) and zinnia (Zinnia) add a bright and colourful element. Mediterranean plants with their grey, hairy leaves are drought tolerant. Lavenders (Lavandula), sages (Salvia), lambs ears (Stachys byzantina) and catmint (Nepeta), with a little care, can cope with the hot, dry conditions of sitting out on a windowsill or rooftop.

Water management

High summer is usually hot and dry and watering is necessary. It’s easy to get out the hose and water everything on a regular basis, but water is a limited resource so think carefully about where and how you water. Most importantly, if you have the space, get a water butt. Water can be diverted into a butt from a downpipe and summer storms often produce a large amount of water that often just runs off the dry soil surface and overwhelms the sewers. If you don’t have the space for a butt use some grey water from the bath or sink to water the garden when possible.

The plants that most need water are those in containers and those that are newly planted, especially trees and shrubs. Lawns do not need watering in dry periods, they will turn brown, but quickly recover after new rainfall. Borders can be mulched after heavy rain to retain as much moisture as possible and watering in the evenings and directly on the soil, not the leaves will help reduce evaporation.

Watering fruit

Fruit trees and bushes, canes and strawberry plants all need adequate water as the fruits swell and ripen. Keeping the ground around the plants or trees free from weeds will help keep competition for moisture down and giving the ground an organic mulch such as well rotted stable manure will help retain moisture. Water all fruits copiously in dry weather, heavy weekly watering is much better than daily light watering as it encourages deeper root growth.

Drought tolerant plantings

Russian sage (Perovskia)

Russian sage (Perovskia), Edwardx, CC BY-SA

All plants are adapted to grow well in the conditions provided for them by their native habitats, those growing in Mediterranean regions and other dry places have developed to be drought tolerant. Climate change, longer, dryer summers and conditions on rooftops, balconies and windowsills often require a plant to tolerate drought to survive and flourish. There are many plants that do well in these conditions. Some have silvery or grey leaves to reflect the sun, others have fine hairs to trap moisture around the leaves. Some have shiny, thick leaves to prevent moisture loss and those with succulent leaves have developed to store water within them. If you are gardening in these conditions, think about planting drought tolerant species rather than trying to grow moisture loving alternatives. Drought tolerant plants include, euphorbia, sedum, lavender (Lavandula), mugwort (Artemisia), hebe (Hebe), Russian sage (Perovskia), cotton lavender (Santolina), false blue indigo (Baptisia), false dittany (Ballota), catnip (Nepeta), globe thistle (Echinops), vervain (Verbena), sea holly (Eryngium) and many more.

Collecting common wild flower seeds

Labelled paper envelopes containing plant seeds

Labelled paper envelopes containing plant seeds, Catriona Andrews

Gathering the seeds of wild flowers to create a wild flower patch is legal if you do so sparingly, for your own use and only from common flowers. First try to identify the plant and check that it is a common species. Flowers will naturally drop their seeds when they are ripe so check that the flowering head is dry and the seeds beginning to fall away from the carpel or rattle in their pod. Harvest the seeds by cutting off a dried stem and placing it in a paper bag marked with the name of the plant. Dry the seeds further on sheets of newspaper left in a cool dry and airy place, again marked with the name of the plant. Once fully dry transfer them into paper envelopes marked with the name of the plant, the year collected and, if you like, the place and person who collected them.

Fruit and seeds of red campion (Silene dioica)

Fruit and seeds of red campion (Silene dioica), Krzysztof Ziarnek, Kenraiz, CC BY-SA

Yellow rattle (Rhinanthus minor)

Yellow rattle (Rhinanthus minor), Muséum de Toulouse, CC BY-SA

Cow parsley (Anthriscus sylvestris)

Cow parsley (Anthriscus sylvestris), Chris Reynolds, CC BY-SA

Field poppy (Papaver rhoeas)

Field poppy (Papaver rhoeas), Rasbak, CC BY-SA

Columbine (Aquilegia vulgaris)

Columbine (Aquilegia vulgaris), Frank Vincentz, CC BY-SA

Foxglove (Digitalis purpurea)

Foxglove (Digitalis purpurea), Frank Vincentz, CC BY-SA

Seeds to collect in July include red campion (Silene dioica), yellow rattle (Rhinanthus minor), cow parsley (Anthriscus sylvestris), field poppy (Papaver rhoeas), columbine (Aquilegia vulgaris) and foxglove (Digitalis purpurea).

Reducing plastic use

The ratio of plastic to plankton in the sea is now 1:2 and the gardening industry is heavily reliant on plastics. The RHS states that gardeners use 500 million plant pots per year, most composts come in large plastic bags, and then there are polytunnels and plastic cloches, much of this plastic once used, is headed for landfill. On an industrial scale, changing practices and legislation are needed; on a backyard scale there is plenty we can do.

  • Make your own newspaper pots with a ‘Paper Potter’ a small wooden former that can construct a simple seed pot from newspaper. Seedlings can be transplanted without being repotted as the pot biodegrades.
  • Buy wooden or plant based pots and trays made from bamboo, grain and natural gums.
  • Use wooden lollipop plant labels, or make your own with a bit of whittled stick, write on them in pencil so they can be reused.
  • Use natural jute or sisal string.
  • Try biodegradable netting and liners.
  • Buy fertilizers and other granular products in cardboard containers, just remember to keep them dry.
  • Find your local plastics recycling company where used plastic can be picked up and recycled into other products.
  • Remember the maxim: Reduce, reuse, recycle!

Visiting gardens

July is a great time of year to visit public gardens that are open year-round or local gardens that may be open for a day or two as part of the National Open Gardens Scheme.

Visiting a variety of other gardens is an opportunity to get inspiration from their layouts, material use and planting combinations. There is often a stall to buy plants from and teas on site for refreshments. Personal favourites include Great Dixter in East Sussex, which has spectacular meadows and contemporary saturated colour planting combinations, and Beth Chatto’s Garden in Essex with it’s woodland garden, perfect for inspiration for shady courtyards and an inspiring drought tolerant gravel garden, developed on what was previously a car park and managed without irrigation.

Gardening tasks in July

Woody Plants

  • Prune June flowering shrubs such as Philadelphus and Weigela after flowering.
  • Feed roses to help with a second flush of flowers.

Ornamentals

  • Step back and take note of the beds for autumn remedial works on plants that are in the wrong place due to poor height, colour or texture combination or those that will need of dividing.
  • Deadhead plants such as repeat flowering roses and hardy geraniums to encourage further blooms this season.
  • Collect seeds for next season. Store seeds in a cool, dry and dark place. Label the containers with the plant name and date of collection.
  • Order spring bulb catalogues.
  • Continue to tie in climbers.
  • Continue to stake tall plants.
  • Divide Iris tubers.
  • Plant autumn flowering bulbs such as amaryllis, colchium and nerine.

Fruit

  • Pick cherries, strawberries, raspberries, currants and gooseberries as they ripen. Surplus fruit can be frozen or bottled.
  • Prepare new strawberry beds to plant out runners from established beds.
  • Cut out old raspberry canes after fruiting.
  • Cut old leaves and runners off summer fruiting strawberries.
  • Train in new blackberry canes as they grow.
  • Further thin crowded apples and pears to allow for maximum growth of each fruit.

Wildlife

  • Continue to put of seed and water for birds.
  • Check any netted fruit for trapped wildlife at least daily.
  • Fill pots and gaps in the border with nectar plants for butterflies: Yarrow, large blue alkanet, thrift, common marigold, cosmos, gaura, avens, lavender, jasmine, begamont, flowering tobacco, oregano, rosemary and sage are all good.
  • Do not prune hedges until the last of the fledglings have left their nests.

Sustainable Practices

  • Water plants well at least once a week during periods of dry weather. A good soaking is better than a quick spray. Newly planted trees and shrubs need a lot of water so water these well.
  • Container grown plants are likely to require more watering and be sure to water these so that the water just dribbles out of the bottom of the pot.
  • Keep ponds topped up with harvested rainwater if possible. Clear dead foliage from the pond to avoid it building up to a foul smelling sludge.
  • Remove competitive weeds by hand or using a hoe. Aim to catch them while they are small, but also consider having some tolerance for less invasive weeds, bearing in mind that they may self seed and become much more invasive in time.
  • Mulch borders to retain moisture.
  • Have a general tidy of dead and damaged foliage on plants throughout the garden. Thin out competitive plants to give their neighbours some space.
  • Keep an eye out for pest and diseases.

Relaxing reading

A Wood of One’s Own

A Wood of One’s Own

Ruth Pavey

The book that describes moving from London to the Somerset Levels and planting a small wood to create a landscape rich with wildlife.

Buy >

Sowing Beauty

Sowing Beauty

James Hitchmough

How to sow from seed to create plant communities that mimic natural meadows. A technique that can be translated to large or small spaces.

Buy >

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Things to see, places to go

Container Food Growing

Learn how to grow lots of food in a small space without a garden. To include seed sowing to take home. Aimed at beginners but all welcome.

date

6 July 2019, 2pm - 4pm

location

South London Botanical Institute, 323 Norwood Road, London SE24 9AQ

Learn more >

Foraging walk, talk and taste: Summer's bounty revealed

Pick a truly fresh salad from wild plants (aka weeds) growing in Finsbury Park. Discover over 20 edible plants and learn about their uses.

date

13 July 2019, 10.30am - 1.30pm

location

Meet at Finsbury Park Gate, opposite junction of Seven Sisters and Finsbury Park Road London N4 2AB

Learn more >

Butterfly spotting

July is a good month for butterfly spotting. Butterfly conservation organises walks all over the country. Check out what’s on in your area using this link.

date

Depends on location

location

Various

Learn more >

Catriona Andrews

CATRIONA ANDREWS

Catriona is a landscape designer and environmental educator. Her work combines naturalistic planting and sustainable practices to create spaces that are sensitive to the environment and welcoming to wildlife. She designs private gardens, community gardens and public spaces and leads courses and workshops on garden and planting design and the environment.