Archive for the ‘Green Tips’ Category

woolly aphids on apple treeLooks like I’ve stuck cotton wool on it does it! This is one of my apple trees and it is under attack………….

….from Woolly aphids – and just like common aphids, woolly aphids are sap sucking, so if they are left untreated they can badly damage the health of the plant.

They tend to strike apples and other orchard trees in late autumn and during winter. So keep an eye out for them!

The woolly (and rather waxy) white fluff that you see is secreted to protect the aphids underneath as they suck away at the goodness within the tree. This tree was badly damaged during the Christmas tree hail storms we had in Melbourne and the aphids have attacked all the “bruised” spots on the branches.

 How to control woolly aphids?

There are chemical controls available on the market that will target aphids and woolly aphids eg. confidor. Many of these controls are systemic – which means they are taken up by the plant, moved around the plants tissue and then when the pest sucks on the plant it dies. Unfortunately systemic controls can be harmful to beneficial insects too – like bees!

Organic control methods can also overcome an attack – but you need to be vigilant with application because you have to try and penetrate the woolly/waxy honeydew secreted by the aphids so you can reach them to kill them!!

I’ve had people tell me that they’d had success by wiping methylated spirits over the woolly spots. I’ll give this a go, but I am also going to try something recommended to me by the guys at eco-organic garden.

Organic Control Spray for Woolly Aphids: Mix 2ml of eco-oil and 2-3ml of eco-neem per litre of water and spray over the tree. Good coverage is essential. Do a follow up spray 7 days later.

I’ll keep you posted on the results!

Of course a healthy tree is also better able to withstand attack from pests, so I’m going to give this apple a dose of Seamungus to help it along.

Anyone else got some nasty critters eating or damaging things in the garden? Email me your questions/photos to ask@beantheredugthat.com.au or post to our FACEBOOK PAGE.

How’s your citrus tree looking? Didn’t get a good crop of fruit this season? Are the leaves yellowing? Not much new growth?  If these symptoms sound familiar, then your lemon, orange, lime or other citrus tree is trying to tell you “I AM HUNGRY”!

Citrus trees are very hungry feeders and to get good growth and a quality harvest they need regular feeding.

As we approach autumn, now is a great time to feed them with a generous dose of animal manure – this is rich in nitrogen and will of course, also help improve the soil. Citrus trees that are nitrogen hungry will have overall leaf yellowing and stunted growth.

When & how much to fertilise? At the start of autumn apply between 2 – 6 kg per tree of animal manure, depending on the age or size of your tree. A younger tree should only need 2kg, while a larger old lemon tree (more than 10 years old) will need the full 6kg.

I like to use a good quality, pelletised chicken manure that has been composted and steam treated. I can highly recommend Rooster Booster, Rapid Raiser or Bounce Back.

How to fertilise? MAKE SURE – you apply the fertiliser right around the “drip line” of the plant. This is the region from the trunk right out to the tips of the leaves, so the shadow of the plant. Keep the fertiliser clear of the trunk, to prevent rot.

Citrus trees have very shallow roots that spread out from the trunk – so it is important to spread the fertiliser over the whole root system.

A generous application of home made compost, all topped off with a layer of mulch around the drip zone of citrus trees in autumn is also ideal.

Yellow leaves with bright green veins? This is an iron deficiency. Treat with iron chelate – follow application rates on the packet. 

Yellowing older leaves, while the younger leaves are green? This is a magnesium deficiency, treat with a dose of magnesium via epsom salts – around 200-250g for a young tree, up to 1.5kg for an older tree. Sprinkle around and water in well. If the yellowing of older leaves has been a consistent problem over a few years, apply dolomite lime at a rate of 1 handful per sq metre and water in well.

Fertilising potted citrus trees….. citrus trees in pots are even more prone to trace element deficiencies, because nutrients freely wash out the bottom of the pot! To combat this fertilise with an organic based, complete fertiliser that has added trace elements. Apply according to packet instructions.

Watering needs of citrus….. Citrus trees need a well drained soil BUT they also need a regular supply of water. And not just a light sprinkle, they need a good deep watering regularly during the hot summer months. Water right around the drip zone too – so all roots are supplied with water.