All About Begonias

Sydney Garden Talk -Saturdays 12noon-!pm on 2RRR 88.5 FM
Today's program featured an interview with Peter Sharp, who has over thirty years experience in Begonia growing and was fundamental to establishing the Begonia beds at Sydney Botanic gardens fifteen years ago.
The beds contain 60 different species and about 50 different hybrids of Begonias.
Start with bedding begonias in a mass to give the visual effect.
The first can Begonia should be  Begonia "Irene Nuss,"  -will take full sun to part shade, flowers from end of spring to winter. Has huge panicles of pink flowers.Almost an angel wing leaf.
All Begonias have leaves that are asymmetrical.
Recommended groundcover Begonia: B. Convolvulacea-can grow up to cover a fence, otherwise about 30-50cm tall depending on conditions. Takes full sun or shade-will grow under trees.
Begonias are heavy feeders,-use a slow release and also supplement with a liquid fertiliser if growing in pots.
Need frequent pruning to shape and size. Pruning of cane Begonias forces growth from the root system rather than promoting lateral growth.
If pots are too small for these Begonias, growth of side shoots will be inhibited.
Begonias for shade: B. listada-deep green velvety leaves with lime stripe-groundcover.
Next to the Cactus family, Begonias are the most drought tolerant as they are succulents by nature. Store moisture in leaves, stems and root systems.
Vegetable Hero:Kohlrabi-Brassica oleracea "Gongylodes"
Heirloom seed from http://www.greenharvest.com.au/ has purple skin and white flesh. Easy to grow.
It has a bright purple skin and white flesh. The flesh is tender with a mild, cabbage-turnip flavour. This is a very hardy vegetable and easy to grow .
Kohlrabi is usually grown from seedlings started in a mini greenhouse, but you can sow seed directly in the garden. Plant the seeds 1/4 to 1/2 inch deep; -, 0.6 to 1.3 cms,
Thin them to 13 to 15 cms or 5 to 6 inches when they're large enough to handle.
Kohlrabi likes fertile, well-drained soil with a pH between 6.5 and 7.5. The soil should be high in organic matter. Also, when growing kohlrabi, you want to make sure to keep the soil well watered or you will end up with woody stemmed plants that are too tough. How do I know when it’s ready to pick?
When kohlrabi bulbs are two to three inches across they can be picked. Or pick then when small, golf-ball-sized, as they become fibrous with age.
Design Elements:-Sunny courtyard.
Using vertical elements will make the space seem bigger.
Climbing plants soften wals and scent intensifies in small spaces:Climbing Star Jasmine, Pandorea jasminoides "Jazzy Bellz," Rosa "Pierre de Ronsard,"-creamy pink double, repeat flowering. Passionfruit-Nellie Kellie.
Espalier-citrus, Coffee tree-Coffea arabica.
Shrubs-Viburnum tinus'Eve Price'-2.5x2.5m
Escallonia 'Red Knight'deep Cerise flowers, grows 1.5x1.5m
Striking folieage-Agave or Phormium Tricolour.
Seasonal colour-Geraniums-angel-wings.Petunias, Osteospermums-Daisy.
Plant of the Week:Ivory Curl Tree-Buckinghamia celsissima.
Buckinghamia celsissima is a hardy reliable flowering tree which has proved popular as a street tree in many areas because of its adaptability. It can either be grown as a tree, or pruned to maintain a shrubby appearance. Responds well to pruning.Flowers are white to cream and occur in summer in large racemes up to 200 mm long. The flowers are well displayed at the ends of the branches.
Ideal growth is achieved in full sun and deep well-drained soil, where it will develop a dense, compact, rounded crown of deep green leaves. New growth is flushed bronze/red. Moderately fast growth can be expected if well-watered and fertilized in summer.
Watering-Although watering is necessary initially, once established, rainforest plants require no more water than other garden plants.
What's On:
Tuesday 9 Feb: Eastwood Evening Garden Club will meet at 7.30pm at the Dundas Baptist Church Hall. Speaker Ken McGill, who works at a nearby nursery, will talk about what’s new for autumn. There’s a cutting table and library available. For more info phone 9874 2306
Friday 12 Feb Composting and Worm Farm workshop at Lane Cove Community Gardens corner Pacific Highway and Mowbray Rd, behind the church, from 9.30am to 12.30pm. Composting and worm farming prevents food scraps from ending up in landfill, and provides great nutrients for your garden. Online booking only for this one. Go to www.lanecove.nsw.gov.au to book. If you do have enquiries about this or don’t have access to a computer call 9911 3555. It’s free of charge for anyone to come along and Lane Cove residents who attend get a free compost bin or worm farm.
Saturday 13 Feb. Growing Friends plant sale at the Royal Botanic Gardens from 9am – 1pm. Free entry.
Also-, Royal Botanic Gardens. Sogetsu Ikebana demonstration – in other words, the art of Japanese flower arrangement. Joan Perkins from the Sogetsu Teachers Association will show you the basic. 10.30Am – 12.15pm in the Maiden Theatre. Cost $35, book on 9231 8182.

Grasshoppers vs Neem Oil

Sydney Garden Talk on 2RRR 88.5 fm, Saturdays 12 noon-1pm

Todays Show:

Crickets, grasshoppers, kaydids and locusts are a group of insects that have strong chewing mouthparts designed for chewing leaves, and they have extra large hind-legs designed for jumping.

There are two types of grasshopper.

Short Horned Grasshopper & Locust s belong to one group called the Acrididae Family.

Antennae are short, horn shaped & half the body length. Length is from 1/2 to 3 1/8 inch long. They feed on all crops and are active during the day. Eggs are laid below the soil surface.

The other type is the…

Long horned Grasshopper & Katydid belong to the Tettigoniidae Family.

Antennae are quite long, bodies are from 1/2 to 3 inch in length.
Hoppers range from dark brown to shades of green Katydids are generally green.
Eggs are laid inside plant tissue. They feed on tree and shrub foliage. These hoppers are mainly nocturnal.

Controlling Grasshoppers
Plant barrier plants like Horehound (Marrubium vulgare, Cilantro, Calendula), netting your crops, catching them early in the morning,
Small traps can be made out of jars or buckets filled with water and a 10% molasses solution, cover with a film of canola oil to deter bees and mosquitoes. Bury the containers up to their rim in the soil; clean and renew the bait as needed.
Insecticidal potassium soap sprays work best on small grasshoppers.
Make up a garlic or chilli spray as a repellent.

Neem Oil:
Neem Oil: Made from the seed of the Neem (azadirachta indica) tree, a shade tree native to India. The active compound azadractin is extracted using water, alcohol or petroleum ether.
Neem has many different effects on insects. It acts as an insect antifeedant and repellant. It can stop or disrupt insect growth (IGR = insect growth regulator) and sterilizes some species.

Plant of the week: GARDENIA

Gardenias prefer regular substantial watering, but they also need moderately well-drained soils with plenty of organic materials worked in before planting. Equivalent to the Rhododendrons and Azaleas, the Gardenia does best in an acidic soil. The root system is shallow and sensitive, so a thick layer of mulch to control weeds is better than cultivating.

Yellow leaves

One of the most ask questions about Gardenias is the yellowing of older leaves in late winter and spring. This is usually a sign that the plant is moving its magnesium to the new growth. In the beginning of spring feed with Epsom Salts (Magnesium sulphate) will usually solve this problem.

To avoid getting other nutrients out of balance, only apply Epsom Salts no more than once a year.

Flower Problems

Watching plump flower buds drop or fail to open is no fun. Neither are blooms that yellow and brown prematurely. Most flowering problems are caused by poor cultural conditions like dry soil, poor drainage, extreme temperatures (hot and cold) and lack of light.

Fertilising:Gardenia plants require to be fed through spring, summer and autumn with Azalea & Camellia food.

What's On:

Hope you recycled that green Christmas tree into the green bin.

Visit http://www.zerowaste.org.au/. For more tips on recycling.

January 2-3, 6-10, 13-17

MOVIES IN THE OVERFLOW 2010 AT SYDNEY OLYMPIC PARK

Movies in The Overflow at Sydney Olympic Park is a FREE outdoor cinema series and one of the Park’s most popular summer entertainment events. The 2010 program will kick off on Saturday January 2 and will feature 11 films in addition to an array of international short films which will be screened in The Overflow (opposite ANZ Stadium). http://www.sydneyolympicpark.com.au/Visiting/Whats_on/movies_in_the_overflow

Geraniums or is it Pelargoniums?

Sydney Garden Talk 12noon-1pm Saturdays on 2RRR 88.5 FM

Feature interview was Gary Dale, Geranium breeder from Geranium cottage. Geraniums originate from dry regions of South Africa, so don't kill with overwatering. Regular tip rpuning helps flowering. Cut them back by half every year.

Plant giveaway: Ivy Geranium "Tom Girl."won by Susan from Newtown.

NEW: Design Elements with Lesley Simpson, garden designer.
Plant suggestions for north facing balconies.
 

Fantastic fruit: Blueberries.Selecting and Storing Blueberries – Pick or buy blueberries that are firm and have an even colour with a whitish bloom. Ripe berries should be stored in a covered container in the fridge where they will keep for about 1 week. Realistically blueberries should be eaten within a few days of picking or buying. I tend to eat mine straight of the bush..

Don't wash blueberries until right before eating as you will remove the bloom that protects the berries' skin from going bad.. If kept a room temperature for more than an hour, the berries will start to spoil.
Blueberry Nutrition - Blueberries are also a good source of Vitamin C, Vitamin E, manganese and both soluble and insoluble fibre like pectin. A cup of blueberries will give you 30% of your RDA (Recommended Daily Allowance) of Vitamin C.
If you think they’re too fussy to grow, . for the same price as a cup of coffee, treat yourself to a punnet of Blueberries, eat them straight out of the punnet (wash them of course) and enjoy the health benefits.
Mail Order: http://www.daleysfruit.com.au/
Choose Rabbit Eye and other chilling varieties like Sharp Blue and Misty for Sydney districts near Ryde and Hunters Hill.

Plant of the week: Star Jasmine. Botanical name:Trachelospermum jasminoides.

Family: Apocynaceae

Common name: climbing star-jasmine

Originates in woodlands of Japan and India.

Twining semiwoody vine to several meters long. Leaves opposite, deciduous, 2.5-7.5 cm (1-3 in) long and 1.3-5 cm (0.5-2 in) wide, lanceolate to broadly elliptic or oval, apex usually acuminate, base cuneate to rounded, margin entire, dark green and glabrous above, paler and pubescent below, petioles 3-8 mm (0.1-0.3 in) long. Flowers in cymes clustered in leaf axils, peduncles 1.3-2 cm (0.5-0.75 in) long, corolla 5-lobed, funnelform, greenish-yellow, striped with orange inside. Fruits paired follicles 12-22 cm (5-7 in) long and about 4 mm (1/6 in) in diameter.

For climbing on tall walls, Star Jasmine needs tying and training. With age, the vines do become thicker, and so the structure on which it is trained, ought to be able to take some weight. On short walls though, it does not require support, as it cascades over the top of the wall. It is also used sometimes as a medium scale ground cover. Left to its own devises, it tends to mound somewhat, and in time can become bare and bald, other than at the growing tips. It is therefore worth pruning and clipping on a regular basis in order to induce lateral growth and ultimately, a denser, more compact appearance.

QnA from Granny Smith festival was about Catnip.

Picture is my cat Mozart eating some Cantnip leaves growing in the garden steps.

Nepata cataria pictured in garden.. Grows to about 50cm x 50cm

Catnip or Nepeta cataria, can be grown from seed or you can buy it from the herb section of good nurseries. They are tough plants, coping with sun or semi-shade. Just give them a good clip to keep them tidy every so often. They really don’t need much fertiliser, if any and only an occasional sprinkle of water. Give you feline friends a bit of treat. A lot of cats like to lie on the bush or even eat a few leaves. Eating the leaves makes them bit drowsy, but for some cats you wouldn’t notice the difference. Catmint doesn’t have as many oils in the leaves, but makes a

nice low growing mound underneath plants like roses. There’s also Cat Thyme or Teucrium marum, harder to get, but much more potent. I used to have a cat that loved nipping this plant.

What's On:
Sunday 29 November. There’s a new community garden starting up in Lane Cove. It’s behind Chatswood South Uniting Church, cnr of Mowbray Road and the Pacific Highway. They hold open days for interested people on the last Sunday of every month between 2 and 5 pm. If you live near this area and are interested in being part of a community garden, visit www.permapatch.org.au or ring Jono on 0401 890256 or Mandy on 9436 2891. They are actively looking for new members to get involved.

Saturday 5 December, 9am – noon. Seed Collection Field Trip From delicate grass seeds to hard woody fruits, our local native plants form and hold seeds in a range of fascinating ways. Come and learn the fine art of collecting seed and practice your skills on a local bushwalk. Wear study shoes, bring a hat and water. Spaces limited.  Location: Lane Cove Council. Contact: Michelle Greenfield PHONE: 9911 3579

Sunday 6 December. Brush Farm House Open day. Tours at 11am and 1.30pm. Cost: Free. Bookings essential. Phone 9952 8222

Sunday 6 December. Macquarie Community Garden. Gardeners meet at 4pm on the first Sunday of every month at corner of Talavera and Culloden Roads in North Ryde, adjacent to the University sports fields. If you’re interested in getting involved, come along and talk to the other gardeners. You don’t have to be a student at the Uni to be part of the community gardening club.

More Birds in the Garden

STAY TUNED TO 2RRR 88.5 FM  Sydney Garden Talk on Saturdays 12noon-1pm
Today's program was all about Pidding Park In Ryde, and how bushcare volunteers have worked to make it the best buhcare site in the Ryde Spring Garden competition. Join you local bushcare group now and make a difference.
For more information contact:Ryde Council Bushcare Officer :Sandra Payne:Ph: 9952 822
Vegetable Hero:Beetroot-grow some now, soak in a shallow saucer of water overnight then sow about 1cm deep.Harvest when about 3cm in diameter for tender tasty beets or no later than 7.5cm in diameter. Keep up the water otherwise they will be tough and woody.
Plant of the week:Jacaranda mimosifolia. Prune dead and crossing branches right back to the trunk so that the suckers don't spring out from the cut. Flowering late October through November. Comes in white as well. Suitable for big gardens.
Australian Conservation Foundation is holding a meeting for Lane Cove residents on Thursday 12th November. RSVP on 1800 223 669
Recycle your electronic waste 9-4pm on Saturday 14th at Willoughby Leisure Centre, 4 Small Street Willoughby.

Granny Smith Festival Day

Today's program  featured the CEO for Smart Approved Water Mark. Go to http://www.smartwatermark.com/ to use the water use calculator.Michael from Eden gardens gave some beaut descriptions of the 1st and 2nd place getters for the Ryde Spring garden competition. It seems judges are looking for a unified theme. Stuff your garden with as many plants as possible. Don't mix and match plants from tropical and cottage garden themes. Don't have any weeds, and manicure your plants to blazes.

The vegetable hero, was in fact the Granny Smith Apple. Needs winter chilling of 400 hours (below 7 deg. C) to grow successfully. This also applies to Pink Lady and Pinkerbelle apple trees. You also need two trees for pollination to occur.

My tip: leave the apple growing to Bilpin growers and buy your fruit from the organic markets.

Plant of the week:Grevilleas-any. (Pictured)

Put in the new hybrids Grevillea Lady O and the ground cover one G. Lemon Gem. Or stick to traditional good doers like G. Moonlight, G. Superb and G. Ned Kelly. Prune these larger grevilleas to keep them looking good in your garden.

Listen to 2RRR 88.5 FM on Saturdays 12noon-1pm. email your gardening question: sydneygardentalk@gmail.com