Winter tomatoes

  There is nothing like the taste of vine-ripened tomatoes, and this is how my neighbour, Cheryl, keeps her tomatoes cropping through winter on the Mid-North Coast of NSW. The tomato plants self-seeded in the rose garden in front of her north-facing verandah and, as they grew, she trailed the foliage across the verandah surface. The plants get plenty of sun during the day and the verandah roof keeps the plants warmer at night and protects them from frost. This clever idea has worked very well and Cheryl has so many tomatoes, she has been giving them away.

Tomatoes can also do well during the colder months in pots on a protected north-facing verandah, as the potting mix in black plastic pots stays warmer than soil in garden beds. Fruiting on tomatoes depends on warm air and tomatoes do not need bees for pollination. Don’t forget to water the plants regularly, and give them a light application of complete organic fertiliser as flowers start to form, to ensure a sweet-tasting crop.

Aubergine (eggplant)

eggplantwht Have you ever wondered why they were called eggplants? This variety is the reason. The small white fruit, which look like hens’ eggs hanging on a bush, has a delicious flavour but has been very difficult to find in recent years and I was delighted to finally find some seeds. Yates has ‘White Star’ and there is a variety called ‘Easter Egg’ available from an Australian grower on eBay.

Aubergines (Solanum melangena) are a member of the tomato family and require a similar position, soil preparation, and soil pH. However, they require warmer conditions for germination than tomatoes and are usually sown 1 cm deep in small pots in a warm, protected position. The small, white variety produces a compact bush and can be grown in beds or pots. Aubergines need staking because the stems are brittle, and they appreciate a light application of poultry-based, complete fertiliser as buds form. Regular harvesting increases production. Cut fruit from the plant with a 2 cm stem when the skin is firm and shiny.

Healthy tomatoes

tmtroots A strong, healthy root system that allows your tomato plants to absorb enough water and nutrients is essential for producing a good crop and allowing your plants to produce their own pest-deterrents. Tomatoes in their natural state, grow along the ground and will form auxiliary roots along their stems, but our method of growing tomatoes tied to stakes prevents this.
However, you can give them a helping hand to produce extra roots before planting out by lying potted seedlings on their side when they are 10-12 cm tall. Leave them like this for a week or so, depending on the growth rate, and remember to stand them upright for watering. As you can see in the photo, the main stem with make a 90-degree turn, and root buds will form on the horizontal part of the stem. Plant them out with the growth tip vertical and the horizontal stem just below the soil surface. Or, you can remove the seed leaves and plant them up to just below the next set of leaves, then hill soil around them slightly as they grow.

Compost – bins and tips

Compost Bins

Compost can be made in a variety of containers. The examples below show a double bin made from recycled timber, a double bin made from recycled, heavy gauge bird wire covered with knitted polypropylene shadecloth, and a commercial single bin. Double or triple bins are best as you can turn the compost from one bin into the next, with the third bin used to start a new heap.
dblcompost compostbins2
Compost tumblers (below, right) do the work of aerating the mixture. They are suitable for composting small quantities of fairly soft ingredients quickly, for people who are not able to turn compost easily, but the mixture may not generate enough heat to kill diseases.
SAMSUNG DIGIMAX A503 SAMSUNG DIGIMAX A503
Homemade containers don’t require skilled carpentry. What goes into the compost container is more important than how it looks. The main points to remember in deciding on the size and site of your compost container are:

  • When ingredients form one cubic metre (i.e. 1 m. x 1 m. x 1 m.), aerobic bacteria will generate enough heat to kill diseases and weed seeds.
  • Open-base bins that are in contact with soil allow earthworms to enter the mixture (when it has cooled down) and provide worm castings to the mixture while they help complete the composting process.
  • Recommendations to position compost bins in full sun do not apply to many parts of Australia, as too much heat can kill off composting organisms. A shaded spot is ideal.
  • Compost bins need a cover to prevent the ingredients becoming sodden in heavy rain.

Some Composting Tips

If you are new to compost making, don’t be intimidated by statements of the ratio of carbon to nitrogen in compost making. Most recommended ingredients contain a mixture of both. With a little practice, you will quickly learn to identify and correct any imbalances.

  • Chop up tough items using shears, a shredder, or a sharp spade (spread items on soil or grass first to prevent jolting). This assists faster decomposition as bacteria work on the surfaces of organic waste. The more surfaces you can provide – the faster they can work.
  • The secret to making compost quickly to turn it regularly to keep it aerated, and to keep it damp as aerobic bacteria that commence the process require nitrogen, air and moisture to process the carbon.
  • The secret to fast composting is regular turning and mixing of the ingredients. Weekly turning while the ingredients are generating heat will produce mature compost very quickly. As the compost breaks down, the mass is reduced.
  • You don’t have to wait until you have a cubic metre of ingredients – turning and mixing ingredients will get the bacteria working.
  • If the pile looks grey or contains ants – it is too dry. Turn and mix the ingredients, while adding enough water to dampen the mixture.
  • Don’t be concerned about slaters in your compost heap. They feed on semi-decomposed organic matter.
  • If the pile is black with an unpleasant smell – it is over-wet. Air has been forced out, and anaerobic composting has begun. Turn and mix the ingredients, while dusting with agricultural lime every 15 cm, and adding some straw to the mix. Protect pile from rain.
  • If the pile seems inactive – it may need more nitrogen. Turn and mix the ingredients, while adding some manure every 20 cm. If manures are unavailable, you can substitute a generous sprinkling of poultry-based, organic-allowed fertiliser.
  • Your compost is ready when it is dark brown, crumbly, with a pleasant earthy smell and ingredients, apart from pieces of egg shell, are no longer recognisable. A 5 cm layer added to topsoil provides your garden with all the minerals that plants, animals and humans need for good health.

Compost materials

OLYMPUS DIGITAL CAMERA Compost is made by combining organic waste than provides nitrogen and/or carbon. The advice to make compost from waste that is green (provides nitrogen) and brown (provides carbon) is a bit confusing when manure contains a lot of nitrogen, but most of it is brown. When suitable dampened materials are combined in a heap that has contact with the soil, heat is generated and millions of aerobic bacteria get to work transforming the fuel into a compost-making factory.

Good Fuels

  • Manure from animals that eat grass (lots of nitrogen)
  • Chicken manure (lots of nitrogen)
  • Weeds without seed heads (nitrogen and carbon)
  • Lawn cuttings that have wilted (nitrogen and carbon)
  • Green prunings – shredded (nitrogen and carbon)
  • Raw vegetables and fruit – chopped for fast break down (nitrogen and carbon)
  • Uncooked kitchen waste – including tea bags and coffee grounds (nitrogen and carbon)
  • Old plants – chopped for fast break down (nitrogen and carbon)
  • Bedding straw for animals that eat grass or seeds (lots of nitrogen and carbon)
  • Straw and hay (lots of carbon)
  • Cardboard boxes and egg cartons – shredded (carbon)
  • Undyed wool, feathers and hair (nitrogen and carbon)

In Small Amounts

  • Newspaper and waste paper – separate sheets crumpled or roughly shredded (carbon)
  • Woody prunings – shredded (carbon)
  • Wood shavings – (very slow to break down and tie up a lot of nitrogen)
  • Seaweed – well-washed (helps factory work faster)
  • Herbs – comfrey, yarrow and chamomile (help factory work faster)
  • Egg shells – crumbled (keep compost smelling sweet and earthy)

Do Not Add

  • Plastic or foil containers, wrapping or disposable nappies
  • Fruit or vegetables that have been attacked by fruit fly or codling moth (larvae can pupate in factory)
  • Plants with diseases
  • Cat, dog or human faeces* (these can spread diseases through compost)
  • Rats or mice* (can spread diseases through compost)
  • Grey water (upsets pH balance and slows process)
  • Soil – makes compost heavy and harder to turn (amount clinging to weed roots is sufficient)
  • Earthworms – the initial heat will kill them. Earthworms know when to move into a compost factory.
  • Synthetic fertilisers (delays process and deters earthworms)

If you only have small quantities of organic waste to recycle, a worm farm would be a better solution. See Compost Worm Farm.
For information on how compost makes garden soil healthy, see Compost.
** Cat and dog faeces, and vermin, can be composted anaerobically in a small pit or container, but this compost should not be added to garden beds.

Compost

compostbins2 Composting recycles organic waste into a product that makes garden soil healthy. Mature compost is a dark brown, sweet-smelling material that can be added to topsoil.
There are two ways to make compost – aerobic, which requires aeration during the process, and anaerobic, which is a slow, rather smelly process. Mature aerobic compost can be produced in about 6–8 weeks in most areas of Australia.

How does compost make garden soil healthy?

  • Compost keeps soil more moisture-retentive, yet better-drained.
  • Compost provides food for earthworms that increase the depth of fertile topsoil by leaving digested food along their deep tunnels.
  • Compost provides food and a home for the many helpful bacteria and fungi that help protect soil from soil-borne diseases.
  • Well made compost has a pH of 6.5 – where all plant nutrients are fully available, and the perfect pH for the majority of plants.
  • Compost buffers plant roots from an unsuitable pH in surrounding soil.
  • It also insulates plant roots from temperature extremes so that soil stays cooler in summer and warmer in winter.
  • Compost contains all the minerals that plants, animals and humans need for good health, most of the soil’s nitrogen, plus lots of humus that forms the most stable part of recycled organic waste.
  • Humus and the minerals that plants need both carry a weak electrical charge. The electric charge holds the plant food minerals close to plant roots and prevents them from washing away in heavy rain.
  • Humus is able to control the release of trace elements needed in tiny amounts, and block absorption of poisonous metals in soil so that they do not end up in our food.
  • Humus stores carbon in soil for very long periods of time.
  • Humus, in compost, provides a habitat for a soil community of billions of beneficial bacteria and fungi that perform important functions.
  • Some bacteria species in humus make a ‘glue’ that is able to hold soil particles in a way that improves the flow of water and air through soil. This improves the structure of soil so that plant roots grow more easily. Strong roots help plants to resist the effects of drought and storms.
  • Mycorrhiza fungi in humus stick like hairs to the roots of plants, helping them absorb water and nutrients in exchange for sugars produced by plants during photosynthesis. Some 95% of perennial plants rely on mycorrhiza for healthy growth.

Frangipani from seed update

This method of frangipani propagation is becoming popular with readers, and one of our readers, Margaret, has been kind enough to share some photos of her very successful efforts.

SANYO DIGITAL CAMERA SANYO DIGITAL CAMERA SANYO DIGITAL CAMERA

 

 

 

 

Why choose this method of propagation? Frangipani grown from seed grow more quickly than trees grown from cuttings and, in the same way a family of children or animals can inherit different combinations of their parents’ genes, plants grown from seed may demonstrate different characteristics of parent plants, sometimes resulting in spectacular new varieties. Plants grown from cuttings are an exact copy on one parent. Not only may the flowers vary in colour or form, we have found that the perfumes of different-coloured frangipani also vary.

We have multiple trees of four different frangipani and the orange one reminds me of the smell of ripe peaches, while the deep pink one has a sweet citrus smell, and the pale pink one hardly any perfume at all.

OLYMPUS DIGITAL CAMERA OLYMPUS DIGITAL CAMERA OLYMPUS DIGITAL CAMERA OLYMPUS DIGITAL CAMERA

 

 

 

 

If your frangipani tree has produced a seed pod or two and you would like to try this method of propagation, you can find more information here: Frangipani trees from seed.

 

 

French beans

OLYMPUS DIGITAL CAMERA Occasionally, garden gurus will say that “beans will grow on the smell of an empty fertiliser bag because they will fix nitrogen in the soil”. This is not true in Australia, where the soil bacteria that is necessary for these legumes to fix nitrogen does not occur naturally. Gardeners are often then disappointed to find that the lower leaves of their beans and peas have yellowed.
French or green beans (and peas) will benefit from the addition of some mature compost and a light application of complete fertiliser when preparing the planting area. Plants need more than nitrogen to be healthy and produce good crops, and compost in soil helps beans resist bean fly.
French beans do well in a sunny position with a soil pH not lower than 6. However, they may need some temporary shade during our heat wave conditions. Regular, deep watering and a 5 cm layer of mulch over the bed will help to keep them growing strongly. Bush varieties of French beans grow best when sown in a block rather than rows, and can be ready to harvest in eight to ten weeks after sowing.
For a continuous supply, sow a small quantity each month listed in the monthly planting guide for your climate.

Bees and lavender

Beelavender Bees love lavender, and because French lavender* flowers during winter, it provides them with nourishment when there is little else in flower. Lavender is known for its calming effect on people and it has the same effect on bees. A hardy plant, French lavender prefers a gravelly soil with a close to neutral pH. It is an efficient water user and requires little complete fertiliser, suits warmer climates, makes an attractive hedge, and is happy in beds or a large pot. All it needs is a light hair cut when flowering has finished.
Bee numbers are declining around the world. This is a matter for concern for all of us as we rely on bees to pollinate a good number of our fruits and vegetables. As well as growing some French lavender or some winter-flowering annuals, please ensure you keep some clean water available in your garden as bees need clean water, too. Many drown each year from trying to drink chlorinated pool water. A bird bath or large plant saucer, regularly topped up with clean water, is all they need.
* French Lavender (Lavendula dentata) is also known as Toothed Lavender, so named for the edges of its leaves.

Compost worm farms

compworms.jpg For organic gardeners who don’t have enough recyclable waste for a productive compost heap, a compost worm farm is the answer.

Compost worms are different from earthworms that tunnel through soil and move into compost heaps after organic matter has been partly processed by microorganisms. Consequently, the term ‘compost worms’ can be confusing to new gardeners. Worm farm (compost) worms require a moister and cooler environment than earthworms (10–30° C.), and feed on a wide range of organic matter, including vegetable and fruit waste (except for citrus and onions), wet paper and cardboard, grass clippings, aged cow and horse manure, soft weeds and hair. Chopping waste into small pieces provides a larger surface area for worms to feed on and speeds up production. The digested waste (worm castings) are a clay-like humus that contains all the nutrients and trace elements that plants need for good health in a form that plant roots can absorb immediately.

Worm castings are Nature’s slow-release, complete organic fertiliser. The more varied the worms’ diet, the better the fertiliser. Simply rake the worm castings into the topsoil on garden beds. As they do not smell, they are the perfect fertiliser for both indoor and outdoor pot plants. They are also a great addition to seedling mixes and, when diluted to very weak black tea strength, the liquid that drains from the worm farm is a fertiliser that gets seedlings off to a flying start.
Worm farming has become a very popular method of recycling and various commercial worm farms are available to suit different situations. Most children find worm farms fascinating and enjoy looking after them.

  • Commercial worm farms come with complete instructions, a starter colony of worms and edible bedding for the worms. Small commercial farms with several tiers are easily moved into a shed or garage in areas where frosts occur. Or, in frost-free areas, if you can find an old hip bath or large sink, you can make your own worm farm as we have here. Worm farming
  • Containers with a drainage hole prevent moisture build up in the base of the farm and a waterproof cover excludes light and rain. (Avoid using old carpet or underlay as a cover as these are impregnated with pesticides.)
  • Add a little water to the farm when necessary to keep the food and bedding damp.
  • A light dusting of dolomite every few weeks will keep the worm farm smelling sweet and the pH close to perfect.

HARVESTING WORM CASTINGS
Worms in farms with stacked trays will move up into the next highest layer when all the food in their tray has been eaten, and it is time to collect the worm castings.
Uncover the worm farm and leave the surface exposed for 15-20 minutes. The worms will move down through the castings away from the light. The castings will contain worm eggs. These are easily recognised as you can see in the photo. They are about the size of the head of a match, or a little bit smaller. Worms don’t lay their eggs in groups like some insects do. They lay them one at a time through the worm castings, but usually close to where they can find food when they hatch.
Harvestcastings1 Use a scoop to collect a layer of castings from the top of the farm. A scoop can be made from a 2 litre juice bottle with a handle. Spread the castings onto an old tray by lightly brushing the castings with gloved hands. Check for worm eggs and any small worms that might still be in the castings and put them safely back into the farm. Cover them with a layer of food.
Then tip the collected worm castings into a bucket and collect another scoop full of castings until you have enough to put into your garden bed, or to make ‘worm tea’.