SUMMER GREEN NOTES

INDEX

Summer is not a favourite time of year for gardeners in very hot or humid areas. Pests and weeds can spread in the blink of an eye, transplanting is difficult and plants can easily suffer moisture stress. Gardeners can suffer heat stress too, and we all know how important it is to avoid potential skin cancer problems. Gardening unfortunately is a high risk hobby or profession in the summer, as only 20 minutes in the sun can be too much. So the window of opportunity to be outside can be a very short period at each end of the day.

One alternative to consider is to reverse what gardeners have always done in winter in very cold areas and that is to put the garden to 'bed' for the season. To do this you would water deeply (if at all possible) in late spring and then heavily mulch the garden and plan to leave it alone until the weather cools down. You can take advantage of overcast days or summer storms to do a bit of weeding. It takes a bit of discipline to avoid buying new seedlings or plants but it has many advantages.

Gardeners in warm areas areas can suffer from burn-out as there is no downtime of year in the garden. Gardeners in cold areas can sit by the fire and browse seed catalogues and look forward with enthusiasm to getting into the garden in spring (this probably sounds a bit rose-coloured glasses). For gardeners in warm areas winter and spring are a major gardening times so by the time summer arrives with its fruit fly and fungal problems, a break can be just what is needed.

SUMMER CITRUS CARE

Citrus are hungry feeders and many problems with poor fruit quality can be traced to poor nutrition. The poorer the soil is, the more often organic compost or fertiliser should be applied but the bare minimum is 3 times a year. November and February are both important months for fertilising citrus. A 1 yr-old tree will need 4-8 kg of well-rotted animal manure, a mature tree will need between 20-40 kg. A good alternative is to apply 750g per tree of organically certified Organic Garden Booster. Only apply fertiliser to moist ground then mulch well, keeping the mulch and manure well clear of the trunk, to avoid collar-rot. Never place fertiliser close to the trunk or in heaps; spread it as evenly as possible to just past the drip-line of the tree. Avoid fertilising during drought. During dry weather citrus need a consistent supply of moisture or fruit will be dry.
Check the pH and correct as required, add 300-400 g of lime to the m2 if the soil is acid (ph below 6). More information.....
Citrus trees have a high requirement for micro-nutrients; a regular monthly spray with Natrakelp seaweed fertiliser will supply these trace elements.
Citrus Leaf Miner causes ugly distorted leaves with silvery trails in the leaf tissue, Meyer lemons are particularly susceptible. Eco Oil is an organically certified control, spray when new growth is about 1 cm long, reapply every 2-3 weeks. January and February are crucial times to spray.
October and November are when Bronze Orange bugs (Stink bugs) appear on citrus trees. The young ones are small and greenish, the next stage are a bright orange and the adults look like large spiny cockroaches but they all cause damage to your citrus trees by sucking sap. Handpicking and dropping into a bucket of boiling water is possible on all but very large trees. Be very careful to protect your eyes and wear long sleeves to protect your arms, as the caustic fluid squirted by these insects can be very painful.

More information on organic citrus care......

CITRUS KIT Includes:

Eco Oil 500ml

Trappit Barrier Glue

Grafting / Banding Tape

1 Insectrap

Organic Citrus Care Leaflet
PG121 $49.50 To order.....

GARDEN CALENDAR
Please note that the following information will vary from year to year depending on the present climatic factors. Information is primarily for climates with a dry cool winter and wet, humid, hot summers. In other areas adjust dates as needed. The information is based on the southern hemisphere and applies to subtropical and tropical areas such as northern NSW and Queensland.

NOVEMBER

Asparagus will be finishing the spring harvest of spears and the bed will now be full of ferny fronds. Keep the plants well-mulched and watered to keep the fronds actively growing as this will feed the crown for the following year. Gardeners in warmer areas often get a 2nd harvest in the wet season. It is OK to harvest spears at this time as long as they are a reasonable size. Spears smaller than a pencil mean the crown is in need of a good feed of compost or manure.
Fruit fly is more active, traps should be replaced as needed, all susceptible fruit should be bagged or Eco-Naturalure regularly applied as a splash bait. Fruit already stung should be destroyed, fruit that has been stung often bleeds a clear sap, or develops dimples. Only feed it to animals if they will actually eat it. Never try to bury or compost affected fruit. More information.....
Prune grevilleas, by removing seed heads and cutting long shoots back by a third, to promote bushiness. They can safely be cut back hard, if they are too big for the space.
Summer prune mulberry for a second fruit crop; cut back new growth by a third.
Protect ripening fruit from birds, possums and fruit bats.
Plant containerised fruit trees, particularly tropical ones, before Christmas. Remember to keep moist until well established.
Daylilies and irises can be divided after flowering finishes.
Put snail pellets out in containers close to young seedlings or use a copper barrier as a collar around the seedlings.
Codling moth traps should be renewed. More information.....

DECEMBER

Watch for aphids on soft shoots of citrus and roses, check for beneficial insects such as hoverflies and ladybeetle larvae before controlling them. If some of the aphids look like little brown balloons, they have been parasitised by a micro-wasp. Spray Natrasoap as a least toxic control in the absence of predators. Tidy rose bushes by removing black spot-affected leaves using tongs.
As mangoes finish fruiting, thin out the canopy to improve air circulation and allow sunlight in. Feed with an organic fertiliser, mulch well. Getting mangoes to fruit consistently in SE QLD can be difficult, mangoes such as Kensington (Bowen) and Nam Dok are cold sensitive and may fail to form hermaphrodite flowers, instead they flower profusely but the flowers are male and so no fruit is formed. Mango cultivars Irwin, Sensation, Brooks or R2E2 are more cold tolerant and so are the best choice for SE QLD.
Bananas need regular removal of suckers to produce good-sized bunches. Each clump of bananas should be made up of a mature plant, a half-grown plant and one sucker only. Preference in sucker selection should be given to those with spear-shaped rather than round leaves and on the side of the plant that you wish the clump to move in. Fertilise with 1 kg of pelleted fowl manure per m² in August, December, February and April. Mulch well. Tidy the plant by removing yellowing, old leaves and if a bunch has developed, remove the flower bell. The flower bell drips nectar and attracts possums and bats; it also uses nutrients better saved for the fruit. Banana bags help fruit ripen and keep the birds away.
Scale are a pest that do damage out of all proportion to their size. Mid-summer is common time for scale to hatch and crawlers to emerge. Frenetic ant activity can indicate scale-hatching periods. Spray Natrasoap, Eco Oil or Pest Oil to kill all stages of scale insects. Banding trees with horticultural glue to keep ants out is also useful. More information.....
Keep snail traps filled with Multiguard pellets or beer to reduce damage to young seedlings. Slugs can a particular problem with the onset of the wet season. More information.....

JANUARY

Maintain fruit fly traps, destroy spoiled fruit.
Use Natrakelp seaweed fertiliser as a foliar spray to keep vegetables healthy.
Keep an eye on citrus for scale problems, the first sign is usually the appearance of Black Sooty Mould, a fungus that feeds on the excretions of scale and aphids, spray with Natrasoap or Pest Oil.
Help lavender survive the wet season by sprinkling a little lime or dolomite directly over the foliage and around the roots. Lavender can be difficult to grow in Queensland or sometimes shy about flowering, as it is not cold enough during winter for some types. We find the best varieties are either French lavender Lavendula dentata or Italian lavender Lavendula stoechas. Lavendula stoechas is a weed in Victoria, so avoid planting it there. Plant only in well-drained spots, such as under eaves, behind rock walls or in terracotta tubs.
Take cuttings of evergreen shrubs such as mock orange, camellia and gardenia.
Control caterpillars with Dipel; avoid planting highly susceptible vegetables at this time of year, such as Chinese cabbage or broccoli.
Train vines regularly, cut back long canes of wisteria and other vigorous climbers. Plant a new passion fruit, as they only last a few years before succumbing to woody passion fruit virus.
Prune spring-flowering shrubs when flowering finishes.
To keep roses in good condition in subtropical areas, prune in January and February, not winter. This removes any foliage infected with black spot, stops flowering and rests the bush during the period of high humidity. This gives a late autumn flush of flowers from March to July, which will hold on the bushes better. Lightly trim again in August. After pruning, fertilise with blood and bone, mulch well with well-rotted animal manures and hay. Water during dry weather in the morning, giving a good soak. Avoid any overhead watering; aim to keep the leaves as dry as possible. Spray Natrakelp seaweed spray onto the leaves, in the afternoon, every 2 to 3 weeks. This raises the pH of the leaf surface and adds trace elements, improving disease resistance. More information on organic rose care......

COPING WITH THE HEAT

During spring as the weather warms up it can be hard to remember just how hot summer can be. Planning ahead will help you and your garden survive the summer heat in good condition.

Try to reduce your water use by mulching. Keep in mind that light straw or hay mulches can be a high fire risk, so avoid using these in fire-prone areas. Bark mulches are less flammable and last longer but are not really suitable for the vegetable garden. Up next to the walls of your house a completely fire retardant mulch such as round pebbles can be a good choice.
Try to group plants together that have similar water requirements. If water is in short supply, plan to replace thirsty plants with those that will cope with drier conditions.
Avoid the use of overhead sprinklers as there is a massive water loss to evaporation. Keeping water off the leaves will help to stop fungal diseases exploding in humid weather..
Organic gardening practices such as composting and green manuring build organic matter levels in the soil, which greatly improves the soil’s ability to retain water.

Work Natra-Store 4 into the soil around fruit trees and shrubs.

PLANTING GUIDE FOR SUMMER

Keep a diary and record your successes and failures.

Vegetables: Non-hearting lettuce (mignonette, oak leaf, salad bowl, cos types) are more heat tolerant than crisphead types, try putting the seed in the fridge for a few days before planting; snake beans French beans (but may be affected by Bean fly); eggplant; capsicum and chillies; cherry tomatoes; all the squash family including gourds, pumpkin, rock melon, watermelon, cucumber, zucchini or angled luffa as a mildew-resistant substitute; sweet corn (remember to plant corn in a block at least 8 plants by 8 plants, corn planted in a long narrow row usually fails to pollinate well, giving half empty cobs); heat tolerant greens including malu khia, ceylon spinach, kang kong; sweet potatoes.

Shrubs and Trees: Tropical trees need a high soil temperature to germinate. Plant now: tamarillo, paw paw, pigeon pea, agati, tamarind, passion fruit.

Flowers and Herbs: Basil, dill, coriander, sweet alice, cosmos, marigolds, phlox, salvia, nasturtiums, snapdragons, verbena, statice, gomphrena, torenia, zinnia, aster, dahlia, phlox, portulaca, cosmos, sunflowers, cleome. Coriander flowers

REMEMBER: The best place to store seed is in a sealed container in your fridge. Seed stored in a hot garden shed or garage that can reach temperatures greater than 40° in summer will simply die. Seed stored open to the air where it can take up moisture will lose viability.

SEEDLING SURVIVAL STRATEGIES FOR THE SUMMER

As the days warm up, it becomes more difficult to transplant seedlings successfully, particularly tender ones, like lettuce. Ways to reduce transplant shock include:

Soak the seedlings for 24 hours prior to transplanting in a weak Natrakelp seaweed solution.
Use Natra-Store 4 in seed raising nixes and apply to the soil before transplanting to help seedlings establish well.
Water the hole before planting, let the water drain away. Then water the seedling after planting. Spray seedlings morning and evening to keep the area moist and raise the humidity. Many seedlings need watering twice a day for at least a week to help them become established.
Always transplant late in the afternoon.
Cover seedlings with upturned pots, shadecloth or a PestGuard cover in the hottest part of the day. Covering seed rows with PestGuard also improves germination.

CHRISTMAS GIFT IDEA
Harvest herbs before flowers fully form for drying or to make home-made herb vinegars.

CORN EARWORM
Try removing the

leaf attached to the base of the cob and the corn silk as soon as the cob has been pollinated to reduce damage by this grub. This

removes the

favourite egg-laying sites of the moth.

ORGANIC WEED CONTROL

Try to avoid ever letting a weed go to seed. If you don’t have time to pull it out, at least remove the flowering heads before seed is set. It is easier to mulch than to weed, so always keep on-hand a mulch supply.

Large weedy areas can be dealt with effectively by 'sheet mulching'. This gets rid of grass and weeds without back strain. Use a mower or brushcutter to cut down the tall growth. Then spread a generous distribution of organic fertiliser. Cover the area with wet newspaper (about 10 sheets thick) as your biodegradable weed mat. Take care to overlap the sheets well to avoid gaps in your coverage. Soak the newspaper first; wetting it after placing it on the ground doesn’t work well. Then top off with a thick layer of mulch, so the paper is well covered. Over 8-12 weeks the grass will decompose and you will have a weed-free garden area ready to plant.

SLASHER

Slasher is a non-selective, plant burn-out spray based on a food grade additive used in the food processing industry to dissolve plant based materials.

HOUSES CAN BE ORGANIC TOO
Act now to prevent the summer invasion of cockroaches, flies and clothes moths!
Cockroaches and silverfish can be controlled with Roach Prufe, a boric acid based product for least toxic control. You can apply it as a fine dust under the fridge and behind the stove. Alternatively Dead End Cockroach Mats can be used under stoves or fridges. Sticky Cockroach Traps identify where the cockroaches are hiding and reduce their numbers. It is helpful to store food and compost in airtight containers, sweep floors regularly, store rubbish in well-sealed bins, fix leaking taps and use a caulking gun to fill cracks and crevices.

Flies are a warm weather problem and have a nasty habit of spreading germs including salmonella and gastroenteritis onto food and food preparation surfaces:

Install flyscreens on all windows and doors
Keep all food in airtight containers
Reduce breeding sites by never putting meat scraps into compost heaps and keep garbage bins tightly sealed
Install an easy way to bury all pet droppings
Wipe door and window edges with an aromatic oil as a repellent; try citronella, cloves, peppermint or lavender
Efekto Fly Traps are an excellent choice outdoors on acreage with cattle and horses.

Clothes moths like warm weather and high humidity. Most of the damage is done to bedding and clothing during storage in the warmer months. Unlike other moths, clothes moths are not attracted to the light but prefer dark crevices to hide in. It is the larvae (caterpillars) that do the actual damage but although it appears that they feed on wool and other natural fibres, what they are really eating is the human residue left on the clothes. The larvae are unable to fully develop on completely clean fabric; they need the proteins, mineral salts and Vitamin B complex found in dirt, sweat and food particles. So the secret to non-toxic control is a combination of washing, tightly sealed storage containers, regular vacuuming of cupboards and wardrobes and pheromone traps such as the Clothes Moth Traps. Avoid completely chemical controls such as naphthalene (mothballs) and paradichlorobenzene (PDB) as they are highly toxic. Even camphor carries a risk, particularly to children.

CHOOSING FRUIT TREES
Planting a long-lived fruit tree is an investment in the future; it will benefit your children and even your grandchildren, sometimes though it can be a waste of money, time and effort. Avoid trees with hard, compressed potting mix that has no give in it, it has been in the pot too long and is packed full of roots. If possible slide the plant partly out of its container, to see if the roots are circling the outside and clearly visible. If so, it is root bound and should be avoided. Cutting of the root-bound roots before planting rarely solves the problem. These are trees that will disappoint you by just sitting there, making little growth.

Grafted trees generally give better quality fruit than seedlings, choose a tree with a well-healed graft union, with no sign of decay at the graft area. Avoid trees that are sprouting below the graft or suckering from the roots. Try to buy your trees from a nursery that has a high turnover of stock and that specialises in fruit trees.

Species selection is important, avoid frost tender species if your area regularly receives frost, these include Jakfruit, Abiu, Pummelo, Rambutan (grow in tropics only), Panama Cherry, Lychee, Mangosteen (grow in tropics only), Sapodilla and some Lillypillies. Some fruit trees will survive frost once they are a few years old. These need either luck i.e. a couple of warm winters in a row or good frost protection for those critical early years. Good varieties for SE QLD are listed in brackets, where known. These include Avocado, Custard Apple, Mango, Macadamia, Ice Cream Bean, Carambola ‘5 Corner Fruit’ (Fwang Tung, 11.1, B111, Thai Knient), Tamarind, Bananas and Pawpaws. Fruit trees that generally are hardy and will do well with adequate soil improvement and irrigation include Citrus, Guava, Persimmon (Fuyu), Tropical Apples (Anna, Golden Dorset) and Pears, Nashi Pears, White Sapote (Dade), Longan (only late varieties will set fruit in SE QLD, these include Biew Kiew, Haew, and Chompoo), Acerola, Jaboticaba, Grumichama, Malabar Chestnut, Pecan, Peach, Nectarine, Kiwifruit, Loquat, Blueberry (Gulf Coast) and Passionfruit. Trees that are tough, drought tolerant and frost hardy include Japanese Raisin, Carob, Olive, Stone Pine, Bunya, Strawberry Guava, Mulberry, and Pomegranate. An extended article on Fruit Trees for Small Gardens is available.

Challenges to growing organic fruit include fruit fly and problems with birds, bats and possums. Unless you are a well-organised gardener, willing to spend a lot of time with control measures for fruit fly, such as trapping, spraying and exclusion avoid planting the following fruit trees: the most fruit fly-prone are Peaches, Nectarines, followed by Guavas, Persimmons, Carambolas, Casimiroas and Mangoes. Fruit fly will also sting Lemonade and Meyer lemons, but leave the thicker-skinned lemons such as Eureka and Lisbon alone. More information on organic citrus care......

EXTENDING THE HARVEST
Eating less familiar parts of a food plant extends the harvest and gives us a better return for our effort.

BANANA BUD AND STEM
The flower bud or ‘bell’ of a banana is widely used as a vegetable throughout SE Asia. Certain varieties, such as plantain banana, produce a better-flavoured bud but they are all edible. Pull the outer leaf sheathes off together with the blossoms until the pinkish-white heart is revealed. Use an oiled knife to cut the bud lengthwise into four. Pulling the hard centre from each stamen is fiddly but worth the effort. The bud is then chopped and blanched. It can be used in a salad, with a coconut milk dressing or vinaigrette or cooked in soup. The flavour is reminiscent of artichoke. In Indonesia I have eaten the chopped inside stem of banana stem in soup, it has a texture similar to celery. To prepare, the outer layers of the stem or trunk are discarded, the tender heart is sliced and soaked in a basin of salted water for several hours. This procedure draws the sap into strands, which can easily be pulled away and discarded.

OKRA SEED
Harvest okra pods to eat when small, no bigger than your thumbs. If they get too big, allow the pods to mature and harvest the seeds, which can be roasted as a coffee substitute.

PAWPAW (PAPAYA)
When eating ripe pawpaw, save the seeds and add to soups as a spice. Using green pawpaw fruit extends your harvest; it can be used in salad, fritters, and soup or baked as you would pumpkin. To make the salad the pawpaw should be green skinned, the flesh should be almost white with no trace of orange colour.

Green Pawpaw Salad

2 cups finely grated green pawpaw
2 tablespoon crushed roasted peanuts
1 clove garlic
2 shallots
fresh chilli to taste
1 tablespoon fish sauce
1 tablespoon brown sugar
lime juice to taste

Peel pawpaw and shred the flesh or grate into long fine strands. Use a mortar and pestle to pound the garlic, shallots and chillies to a paste. Add fish sauce and sugar, then add the pawpaw shreds and pound lightly. Turn into a bowl, add lime juice and toss. Sprinkle with peanuts.

GRAPE VINE LEAVES
Dolmades are a seasonal treat to make when the young tender leaves appear on the grapevine. To use, blanch them in simmering water for 5 seconds to soften. They can also be frozen after blanching for later use.

Dolmades

25 grape leaves (blanched)

1 tablespoon lemon juice

¾ cup water

1 tablespoon olive oil

Filling:

¼ cup olive oil

1 onion, chopped finely

2 tablespoons pine nuts

2 tablespoons currants

½ cup short-grain rice

1 cup water

2 tablespoons chopped parsley

Trim stems completely from vine leaves. Place vine leaves, vein-side up (shiny side down) on board; place 2 teaspoons of cooked filling in the middle, fold sides in and roll up firmly. Line a heavy base saucepan with slices of lemon, then pack the rolls in. Pour over the combined lemon juice, water and oil. Cover with more slices of lemon and place a heavy plate on top. Put the lid on and simmer over a low heat for 1 hour. Cool in the saucepan.

Filling: Heat the oil in a fry pan (that has a lid), add onion, cook, stirring until soft. Add pine nuts, lightly brown. Add rice and currants and stir 2 minutes. Add water, cover and cook over low heat, for 10-15 minutes or until the water is absorbed and the rice is tender. Stir in parsley, salt and freshly ground pepper.

CHOKO SHOOTS and LEAVES
The tender shoots can be steamed and served like asparagus. The young leaves can be cooked like spinach. The tender young leaves of pumpkin can also be eaten.

CITRUS PEEL
Save the skins of your home-grown oranges and dry in the oven or next to the wood heater in winter. Store in a jar and add to herbal tea mixtures. Our favourite dried herb tea is a mix of lemongrass, rosella, lemon verbena and citrus peel.

ZUCCHINI FLOWERS
Zucchinis produce both male and female flowers so it makes good sense to eat the male flowers, as they won’t produce a fruit anyway. The female flowers can be distinguished by the swelling of the fruit behind the flower whereas the male flower will only have a thin stalk with no swelling. Wash the flowers, dry carefully and check for insects. The flowers can be dipped in a light batter or just fried in olive oil as they are. They can also be filled before frying with a little grated cheese, a savoury rice mixture or a zucchini puree. The oil can be flavoured with garlic by first frying several cloves in it, removing the cloves and then cooking the flowers.

GROWING YOUR OWN CHOOK FOOD

It is to your advantage to grow some food for the chooks as this will reduce feed bills and also provide the chickens with a healthy, varied diet. The chickens will be happier provided with both shade and entertainment. More information........

DISCLAIMER:

No liability will be accepted by Green Harvest, its owners or employees as to the accuracy of any information. No responsibility will be taken for damage to property or persons due to information given about a product or technique. No responsibility will be taken for the loss of a crop or income due to information given about a product or technique.