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From Jon Lamb Communications
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November 29, 2019

Citrus gall wasp survey – we need your feedback

Citrus gall wasp is causing mayhem in many gardens and it appears to be spreading rapidly across SA.
During the past 12 months gardeners have been kept abreast of new and practical control strategies – through the Good Gardening newsletter and ABC Talkback Gardening.
Now it’s time to identify how successful these strategies have been and what kind of action gardeners are likely to take in the year ahead.
If you have a citrus gall wasp problem in your garden, your participation in the Good Gardening newsletter / ABC Talkback Gardening – Citrus Gall Wasp Survey would be appreciated.
The information you provide, particularly relating to the extent of the problem in your garden and the action you took to keep the insect under control, will help all gardeners in their quest to keep on growing garden fresh citrus.
Survey results will be summarised in the December 20 edition of Good Gardening and also on ABC TalkBack Gardening on Saturday morning, December 21.

You can complete the quick, online survey here »

Citrus gall wasps come to a sticky end

For Linden Park gardener Catherine Skene the problem of controlling citrus gall wasp has finally been solved.
Horticultural glue smeared over the galls just before the wasps were forecast to emerge, has done the trick.
Having tried many different control methods without success, Catherine thought Good Gardening readers may like to see the results for themselves.
In this case a picture is worth a thousand words.

Confidor's registration to be reviewed

Registration of the controversial insecticide Confidor, along with other neonicotinoids, is to be reconsidered by the Australian Pesticides and Veterinary Medicines Authority.
Confidor is widely used by home gardeners.
However, there is growing concern over its possible effects on the health of honeybees, as well as other insects  and birdlife.
The APVMA yesterday indicated it intends to reconsider product registration and label approval on the basis of potential risks to the environment and to ensure safety instructions on products meet contemporary standards.
Feature plant
Artemesia Elite Silver Cascade

Artemisia Elite Silver Cascade

There is something magical about “ Elite Silver Cascade” with its silver- grey, lacy foliage – particularly when group-planted between the lush green foliage of dwarf dahlias, geraniums or low growing hibiscus.
As a foliage plant its colour is on show all year round and as a low-growing but spreading perennial (15 by 50 cm) it adapts readily to hanging baskets, containers, growing in garden beds or maybe used as an edging on retainer walls.
While Elite Silver Cascade is a sun lover, it grows well in part shade.
Keep on the dry side, protect from heavy frosts during winter and don’t be afraid to cut the foliage back occasionally

Artemisia Elite Silver Cascade are available at Crafers Garden Centre, Heynes Garden Centre, Garden Grove Nursery and many other nurseries and Mitre 10 stores.

Time running out for new plantings

Hurry if you intend to establish fruit, vegetables, herbs or ornamental plants this season.
The window of opportunity for low plant stress establishment will be closing soon.
Be selective when you buy.
Plants that are well grown and in prime condition will move into “grow mode” much faster than those that are already starting to struggle.
With the likelihood of warmer and drier conditions this summer, spend a little extra time before planting preparing the ground – or the growing material – if you are planting into a raised garden bed or container.

Tomato shade pays off – big time

If you are still pondering the value of protecting your summer vegetables with shade cloth, take a look at the photos Panorama gardeners Margaret and Richard McLoughlin sent to Good Gardening newsletter this week.
They wrote: “These photos show the worth of 50 percent shade cloth over our tomatoes, basil and other summer crops two years ago.
"The tomato plants were not damaged by the sun and, as you can see, were in the pink of health.
"We don’t know what variety the tomato is but the largest fruit was 808g. When cut open it was fleshy with a thin skin. The taste is brilliant.”

It’s worth repeating – plants growing in the shade that have a healthy root system and adequate water are unlikely to be stressed by the heat.
Irrigation Guide

Automatic watering systems simplified

At last there is a simple, trouble-free way to distribute water to different parts of your micro irrigation system. We're talking about Antelco's eZyvalve 4.
This is a very simple pre-assembled valve box with no internal pipe connections.
It also includes all the cables, seals and wire connections you need inside the box.
The eZyvalve 4 can be installed above or below ground and leaves minimum footprint.
This is an ideal piece of equipment for both landscapers and home gardeners and is easily adapted to greenhouses and other applications involving solenoid valves.

More information here »

Eye-catching, tasty new chillies available

A new wave of ornamental but very edible chillies is starting to appear in garden centres. 
These look great when covered with their bright and often multi-coloured fruits and are sure to be used for Christmas decoration – unless of course you can’t resist the taste of garden fresh chillies.
Because of their uniform growth, ornamental edible chillies are very suitable for container growing.
All varieties adapt well to garden beds, raised beds or containers.
 

Try growing chives or spring onions

Chives and spring onions are two salad lines that are easy to grow at this time of the year.
The leaves can be removed a few at a time or harvested together, providing you leave the lower 25 percent of growth. 
This way the plants will quickly develop a new set of leaves.
For container growing, choose a 20 to 30 cm pot filled with quality potting mix.
Regular watering and applying liquid fertiliser will encourage healthy new growth.  
During summer the plants will benefit when grown in semi-shade.
Seasol super soil wetter

Strategies to help beat the heat

When summer temperatures start to climb, plants in the garden are easily stressed.
Fortunately there are a number of strategies available to assist with summer survival.
Applying a layer of mulch will help conserve moisture and suppress weeds.
Providing the garden (including the lawn) with a good soak rather than a light daily sprinkle will encourage plant roots to grow deep into the soil and improve their tolerance to drought.
Don’t forget the Seasol.  This is a plant’s best friend in the heat. It can be used every 2 weeks and will help make your plants more resilient to heat and stress.
If your soil is misbehaving and repelling water then give the area an application of Seasol Super Soil Wetter and Conditioner.
This is a wetting agent, soil conditioner and plant health treatment all in one. It also conditions the soil and improves garden health.

More information »

Repotting?  Container size is important                   

A small tree or shrub growing in a small container should not be planted directly into a large container as the potting mix outside the plants (small) root zone will remain wet and inhospitable to new root growth. 
In this case, repot into a container no more than twice the width of the plants root zone and then bury this in potting mix within the large container.
Lawn Care – Stefan Palm
Kenda kikuyu

Meet the toughest lawn on the block

When a lawn that is incredibly tough, hard-wearing and drought-tolerant is needed, thoughts usually go to kikuyu grass.
But, there is now a new improved kikuyu with even more vigour and durability.
It’s called Kenda Kikuyu and it is the topic for this week’s lawn blog from turf consultant Stefan Palm.
 
More information here »
 

Preventing tree root invasion

The best way to prevent tree roots from invading your lawn or vegetable patch is to develop the practice of watering the tree roots separately from the rest of the garden. 
Allow the hose to soak water slowly but well down into the subsoil beneath the trees drip zone every 6 -8 weeks during the summer growing season.
Paul Munns Instant Lawn

Repotting indoor plants – do it soon

If your plants need re-potting, do it soon or wait until early autumn. 
Re-potting in the middle of summer can often result in plant stress. 
An application of a weak liquid organic fertiliser every few weeks during summer is worth considering.

Please keep your questions for Talkback Gardening

Good Gardening  is unable to answer individual reader's questions via email.
If you're looking for specific gardening advice please give me a call on ABC Radio Adelaide's Saturday morning Talkback Gardening  or speak to the experts at your local garden centre.

Open GardensOpen Gardens

Saturday & Sunday, November 30 & December 1
Apple Tree Farm
141 Ridge Road, Ashton
Ayoung garden, redesigned about five years ago around the bare bones of the old garden when the 1860s cottage was renovated and extended. The site has some steep slopes which have been re-shaped to create flat areas and the banks that resulted have been imaginatively landscaped with a clever selection of hardy plants.
More information on the garden and directions »

Estella
38 Cross Road, Myrtle Bank
The design was influenced by a pair of huge existing plane trees and also the need to provide an off-street parking space. A pergola draped with a wisteria softens the area and near the front door, a courtyard with a water feature perfectly harmonises with the style of the property.
More information on the garden and directions »

Gardens open 10 am to 4.30 pm.
Entry $8 - OGSA members; $6 - Government concession card holders; children under 18 free.

More information on the 2019 season »

Weekend gardening weather

Talkback Gardening tomorrow

ABC Radio Adelaide Talkback Gardening this Saturday – phone me and Deb Tribe on 1300 222 891 and have your own gardening question answered.

Guest -   Adelaide Consulting Arborist, Guy O’Donnell
Topic – Elm Leaf Beetle –Beaten by last summer’s heat. How long before they recover?
Plus:  More details about the Good Gardening/ ABC Talkback Gardening, Citrus Gall Wasp survey. Why your information is important.

Regular garden attractions

Adelaide Botanic Gardens – free guided walks
Friends of the Botanic Gardens of Adelaide guided walks for the public at Adelaide, Mount Lofty and Wittunga Botanic Gardens, and Botanic Park.
More information »

The Waite Arboretum, Fullarton Road, Urrbrae

Open free to the public every day of the year from dawn to dusk, except on fire ban days. Free guided walks on the first Sunday of every month, 11 am to 12.30 pm.
Meet at the West lawn (Croquet Lawn) of Urrbrae House. Bookings not necessary.
More information »

Urrbrae House historic precinct gardens
At the end of Walter Young Avenue, off Fullarton Road, Urrbrae, or from the Urrbrae House gate, Claremont Avenue, Netherby.
Open from dawn until dusk every day. Free entry.
More information »

Carrick Hill
Heritage house museum and garden, the former home of Sir Edward and Lady Ursula Hayward. Open weekends & public holidays. Free admission into garden and grounds. 46 Carrick Hill Drive, Springfield.
More information »

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Disclaimer: Although all reasonable care is taken in preparing information contained in this email, neither Jon Lamb Communications (JLC) nor its officers, staff or suppliers involved in the editing and production of this email accept any liability resulting from the interpretation or use of the information set out in this document. Information contained in this document is subject to change without notice and is of a general nature and should not take the place of professional personal advice. No responsibility is accepted by Jon Lamb Communications for the accuracy of information contained in web sites linked from this email. Publication of an advertisement does not constitute endorsement by JLC of any product or service, or warrant its suitability.

Copyright © 2019 Jon Lamb Communications, All rights reserved.


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