Roehampton Garden Society

RGS members consultation

These documents are drafts of an update to our Complaints Procedure and a Code for Social Cohesion. They will be used to resolve any disputes and complaints. We welcome your views. If any member would like to comment on these drafts, please use the ‘general enquiry’ form on this website here or email . This consultation is open until the end of May 2019.

Wisley Garden opens a new welcome centre

The RHS has opened it’s new ‘state of the art’ welcome building, which includes a cafe, restaurant, shop – including botanical bookstore and a new plant centre.

Watch the opening here

The plant centre is stocked with an amazing array of plants, showcasing British nurseries. At the opening on 10th June the RHS ambassador Alan Tichmarsh spoke about their important contribution to our horticulture.

Alan Tichmarsh said “Millions visit Wisley every year to be inspired by the horticulture on display and now the RHS flagship site will be a permanent showcase to celebrate specialist UK growers….. These plant specialists lovingly grow the rarest, most unusual and beautiful varieties in the world, which thrive in UK gardens because they’re so used to our climate….. I promise to help Greening Great Britain by continuing to promote and buy from specialist UK growers. If the UK’s army of 27 million gardeners were to do the same, we would be protecting the UK from pests and diseases coming in from abroad; helping pollinators which need a diverse range of plants in order to survive; and supporting this vital industry that is worth more than £24 billion to the UK economy.”

Pictures from the summer show

A sunny, special occasion with a festive feel, the summer show was a great success and enjoyed by all. With thanks to those who set up, served, baked, judged, helped, enjoy re-visiting the occasion – or see what you missed! Full results in the next bulletin.

Summer Show 2019 – Sunday 9th June

Our new style Summer Show will take place on the RGS Allotments Site 2 at 1pm. Come and enjoy meeting other gardeners – lunch in the open air and view the exhibits. The plant stall will be busy as usual and there’s a cake competition for all our bakers.

It’s an opportunity to showcase the lovely things we grow – please do enter for at least one class. There’s lots of advice about how to do this in the ‘Guidance for entrants’ and a full list of classes in the ‘Summer Show Schedule’ – which also has an entry form attached. Bring your exhibits along between 10 am and 12 noon.

May jobs on your allotment

Pea Frame

Maintaining soil and structures and planning ahead

  • Hand weed and hoe regularly to keep on top of weeds. (Chickweed will produce 2,000 seeds per plant per season if left untouched!)
  • Keep the soil in good condition. Add garden compost or well-rotted manure to maintain soil structure and retain moisture and nutrients.
  • Sow fast-growing green manure such as crimson clover, buckwheat and phacellia where there are areas of bare soil or where summer or autumn vegetables are to be planted out. Dug in before July they will fix nitrogen in the soil and improve soil structure.
  • Plant comfrey.  The leaves can be used as a compost activator or for making an excellent liquid feed.
  • Keep adding to the compost heap, making sure to mix ‘greens’ (lawn cuttings, kitchen vegetable waste) with ‘browns’ (ripped cardboard, straw etc) and added layers of uncomposted stable manure.
  • Continue to mow grass paths.  (A strimmer is available to borrow in the store. Charge £1.00.  Contact to book. Lawn mowers, free to borrow, are  stored in the toilets on both sites.)
  • Apply greenhouse shading to limit temperatures to 27c (81f) and ventilate on warmer days.
  • Watch night time temperatures and cover vulnerable plants with fleece or cloches if necessary.
  • Net cherry trees against birds as cherries begin to form.

Sowing and growing

  • Sow salad crops including radishes, spring onions, spinach and beetroot successionally for continuous cropping.
  • Sow herbs such as basil, coriander, dill and parsley.
  • Early in the month sow cucumbers and courgettes pots indoors for planting out later.
  • Sow cauliflowers, sprouting broccoli, Brussels sprouts and leeks for harvesting next winter.
  • Sow sweetcorn, French and runner beans direct into the soil.
  • Sow carrots in finely raked soil.  Use insect mesh to protect from carrot fly, securing well by pushing edges in to the soil, or sow in containers higher than 2 feet to lessen risk of carrot fly attack.
  • Sow pumpkins, squashes and outdoor cucumbers under cover now or outdoors towards the end of the month. Watch for cold nights.
  • Make late sowings of peas by the end of the month.
  • Prepare a fine seed bed and sow flowering annuals to attract pollinating insects.
  • Support broad beans and with stakes and tie in with strings.
  • Watch out for blackfly on broad beans and rub off or wash off with squirted water. Pinch off the tips with blackfly above the flowers as soon as the first beans start to form and bury in the compost heap.
  • Earth up potatoes when shoots are approx. 9 inches to prevent green tubers, pulling the earth up with a rake to form peaked rows. Remove any cold-damaged foliage.
  • Watch out for early summer dryness. Recently planted trees, shrubs and fruit need regular watering for the first two growing seasons.
  • Remove raspberry suckers encroaching onto paths or between rows.
  • Check gooseberries and redcurrants for sawfly larvae and remove manually.
  • Plant out tomatoes towards the end of the month watching out for drops in night time temperatures below 12 degrees c.  
  • Start to remove side shoots from leaf axils of cordon tomatoes.
  • Plant out Brussels sprouts, celeriac and leeks for autumn and winter harvesting.
  • Hang pheromone traps in apple trees to reduce codling moth caterpillar attack.
  • Start hardening off tender plants for planting out at the end of the month.
  • Place straw under strawberries to keep fruit clean and deter slug damage. Feed with tomato fertiliser every week.


  • Harvest up to half stems of established rhubarb when the stalk reaches 9-12 in. Pull (do not cut) stalks, taking no more than half at any one time.
  • Start harvesting established asparagus spears when 5-7” tall.
  • Harvest early crops of radishes and salad leaves as they appear.

Gardening for Wildlife

  • When plant buying choose single flowers as better sources of pollinating insect food than double blooms.
  • Top up bird feeders to help birds feed their young. Avoid peanuts now as these can choke chicks.
  • Froglets and efts (baby newts) will be leaving ponds by now so make sure there is a slope for them to climb up.  Make sure there is plant coverage on surrounding flagstones or they will fry on these.