Wednesday, 8 March 2017

Garden Group Meeting - 28 February 2017 - Video of Highgrove

Sue visited Highgrove, Prince Charles' garden, last summer. She was very impressed.  Subsequently she came across a video on U-tube about the garden. For those members who were not able to see it, the video link is:

Friday, 3 February 2017

Caterpillars - Buxus sempervirens

The following we received from Dominique Urban:

How to protect and treat Box (Buxus)

The plants are attacked by an insect, “pyralis” (Fr : pyrale). (or meal moth, eastern firefly and big dipper firefly)

They can be protected and treated by spraying products against  la pyrale du bois” or “la pyrale
du chou” (the same product for both).

The caterpillar that does all the damage

If you prefer to use organic sprays, there is one called “Solabiol” which is available at Racine in Draguignan and probably other places.

Box ravaged by the caterpillar

Asian Hornets - the damage they do - how to eliminate them

Dominique Urban made us aware of the damage the Asian Hornet is causing in France.  The following is her input:

Eliminating the Asian Hornets (Fr : “frelons asiatiques”)

These hornets, recently arrived in our part of the country from Asia, feed on bees. They stay near
the beehives and catch them on their way in or out of the hives.

The damage to the bee population is enormous, specially as when this damage is added to that caused by weedkillers. Some beekeepers have lost most of their bees.

There is a very simple solution to eliminate many female frelons and thus significantly reduce, year after year, their total numbers :

In Spring, the female frelon looks for sugary food necessary to prepare her eggs (she lays about a thousand!), and still keeps looking for it when it becomes carnivorous.   So we can lay the frelon traps from the end of February to the end of Summer.

You can either buy a wasp trap and hang it from a branch, not too high, and fill it with the kind of
product shown on the photo or, if you like DIY, you can make one from two plastic bottles, one with a large neck at the base of the trap inserted inside the bottom of the other one (used as a tunnel bringing the hornets in).

For the liquid, you can use anything sugary such as water with jam or sugar, or beer…

If there are hornets’ nests near your garden, you’ll capture enormous quantities :  in our fairly small
garden we catch more than 300 with three traps each year !  We never see them in the wild and would never have thought there was a problem !   If you are in a place where the frelons haven’t yet arrived, you’ll catch wasps and big black flies . . . . . so the traps are multi-purpose !

If you like honey and think that bees are necessary for the human race to survive, put up your traps

now !

Asiatic Hornet's Hive

Thursday, 2 February 2017

How to make an organic pest-repellent plant spray

Tineke Stoffels mentioned this plant spray on our last garden group meeting.  She has used this spray  last summer, it was very effective against lice and spider mite.  She even sprayed her Buxus with the mixture and had no problems with the small caterpillars that devour the Buxus before you realise they are there.

The recipe below mentions a blender, no need, she chops up the ingredients and puts it into a used plastic milk bottle, adds the water and screws on the top. She leaves it to marinate for at least 24 hours.  After straining the mixture, Tineke adds a dash of washing up liquid, she finds the spray clings better to the plant.

How to Make Onion Juice for Plant Spray

A blender offers a convenient means to puree onions and other spray ingredients.

Garden crops and ornamental plants throughout the landscape are potentially bothered by many different types of destructive pests. Rather than rely solely on commercially available or synthetic pest control products, you may opt to create your own pest-repelling plant spray. One potential effective ingredient in a homemade pest spray is onion, which has a strong odor offensive to many pests. Combining an onion with garlic and pepper to make a spray further increase its effectiveness against pests that chew on plant leaves or suck out plant fluids./

  • Blend about six cloves of garlic, one large onion and a tablespoon of cayenne pepper or two whole peppers together in a blender or food processor.
  • Combine the blended onion, garlic and pepper with a litre of water and let the mixture sit in a refrigerator for at least 24 hours.
  • Pour the mixture through a strainer or cheesecloth into a jar to separate the solid mash from the liquid.
  • Bury the separated solids shallowly in areas of your garden or yard near plants that are particularly bothered by pests.
  • Pour the onion solution into a spray bottle
  • Spray pest-infested or vulnerable plants thoroughly with the onion spray.
  • Store any unused spray in the refrigerator. Use it within two weeks, spraying the plants every few days and following any rainfall or overhead irrigation.

Things You Will Need:

Garlic cloves (at least six)
Large onion
Cayenne powder or one or two peppers
Strainer or cheesecloth
Spray bottle
Biodegradable dish soap


Add about a tablespoon of biodegradable dishwashing liquid to the already-steeped spray solution to increase its effectiveness against certain pests.

Test any homemade pest spray on a few leaves in an inconspicuous part of the plant and monitor these leaves for any injury caused by the spray for a day or two before treating the entire plant.

Tuesday, 31 January 2017

Hedges - 31 January 2017

Our first meeting of 2017 was held at Francoise McCredie.  Mavis gave a talk on hedges, the most suitable hedges for our climate.  The following are her notes.


Why a hedge

  • Apart from being attractive a hedge creates a barrier helping to give privacy and lessening noise from traffic and neighbours.
  • It acts as a windbreak, reducing the force of the wind.  With a wall the wind hits the wall and is forced up over the wall, crashing down the other side with a greater force.
  • It can be used to hide unpleasant views.
  • Hedges can make strong and attractive divisions even inside a small garden.


  • Your reason for a hedge will govern your choice of plants as well as the desired final height and width.
  • Will it be evergreen or deciduous?
  • Will it be flowering and loose growing or a formal monoculture neatly clipped.
  • Will it be made up informally of different varieties of shrubs often known as a tapestry hedge.

  • First consider our climate and soil type.
  • Decide on final height.
  • Final width is important.   On the edge of a property the hedge must not grow over a pavement or road nor intrude over a neighbours boundry.
  • If a hedge is to be straight measure the length and bang in a stake at either end to fix a line for the central planting guide.  Remember to allow for final width, leaving space to prune both sides.

  • You should now have decided on your plant choice and bought in pots or bare rooted, the latter being generally cheaper but harder to source.
  • If bare rooted dig a trench the length of your guide line. For potted plants either space evenly in the trench or dig evenly spaced individual holes.

  • Spacing guide. Remember tall thin plants closer together than short spreading plants.  
  • Small hedges (Lavender, Rosemary etc.) average 40 cm height, space 30 cm.
  • Medium height hedges (Viburnum tinus, Pittosporum, Pyracantha etc..), height 110-150 cm, space 50 cm. 
  • Tall hedges (Oleander, Cupressocyparis, Taxus (Yew) etc.), height 180 cm plus, space 100-130 cm. Ask about spacing when buying plants.
  • The soil should be well worked over and weed free.
  • The depth of the holes or the trench depends on the size of the plants you have chosen.

  • The root ball should be loosened and the roots spread out as much as possible.
  • A sprinkling of fertilizer goes below the root system.
  • Do not plant in heavy wet soil as it could rot the roots.
  • Heel in each spade full of soil around the plant, with the soil reaching slightly above the level that was in the pot.
  • Make sure the top level of soil is well heeled in with your boot to secure the plant and stop it rocking.
  • Now water well. In the first year do not let the soil dry out, but do not overwater in winter
  • Dress with a complete fertilizer in the spring of the first year.

  • In the first few years deciduous trees need a later winter trimming using secateurs.
  • Large leafed evergreens cut only with secateurs along a stem and not through the leaves as damage to leaves is unsightly and encourages disease.  Prune these in summer or after flowering.
  • Young evergreens (Yew, Leylandii etc.) prune lightly in spring, thereafter in summer.
  • Large formal hedges are cut using a motorized hedge cutter.
  • Always cut from the bottom using an upward sweeping action.  
  • The bottom of these hedges should always be wider than the top as this allows light to the bottom and stops the hedge becoming bare at the base. The hedge will then have a flat topped A   shape.  

  • For an even top one should have a line of string to follow. The day after pruning check that you have removed all the clippings from the top of the hedge.
  • Always remember to use protective clothing when using hedgecutters and a stable ladder.

Here is a rough guide to suitable hedge plants

Small hedges
Teucrium fruticans
Lonicera nitida

Lavender hedge

Medium height
Eleaegnus x ebbingei
Euonymus japonicus
Viburnum tinus
Pittosporum tobira
Prunus lusitanicus
Ligustrum ovalifolium
Escalonia ‘Iveyi'
Osmanthus heterophyllus
Berberis darwinii, or Berberis x stenophylla
Spiraea thunbergii
Abelia –

Pittosporum tobira

Cupressacyparis leylandii
Taxus baccata (yew)
Chamaecyparis lawsoniana
Thuja plicata

Hedera helix

Ivy makes an attractive barrier if planted against a wire fence and then threading each piece of ivy stem horizontally through the mesh. Do this for the depth and the length of required coverage.

When established the ivy should be cut back with secateurs in spring to thicken the growth.

Ivy Hedge

Useful website bearing in mind that it is English and not all suggestions are suitable for our climate, hedges


Text: Mavis McQuade
Photos: Web + Mavis McQuade


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