Autumn is the time to really get working at improving your soil. Jack Frost has been visiting so it is now time to remove all those spent summer veggies and turn your thoughts to the spring growing season.
Now is the time to plant green manure crops – Tony & I have a bed of broad beans growing (from seed saved last year) which will be chopped down and allowed to rot back into the soil in spring.
The other soil improvement project we undertake at this time of year is to cover each empty bed with a layer of manure, compost,lime and then a thick layer of autumn leaves. These beds are allowed to fallow until November when we plant out our summer vegetables and, thankfully, there will be no weeds able to penetrate the layer of mulch!!!
This week’s big project has been to improve the soil around our lemon tree. This tree is nearly 20 years old but has been struggling with the recent dry autumn/summer weather.
Firstly, we added a border of rocks to hold the increased soil level. then covered the soil with a thick layer of newspaper to suffocate the Kikuyu growing under the tree and stealing all the water and nutrients. The paper was covered with layers of lucerne hay, compost, manure, autumn leaves and lastly some wood chip mulch. Over winter, these layers will slowly convert into a rich soil full of nutrients and worms to help the tree survive whatever Mother Nature wishes to throw at us next summer. The extra organic matter will help to retain soil moisture and the mulch layer will help to keep the soil cool and prevent competition from weeds.
The other, very important task for this time of year, is to establish the sites for any new, bare-rooted trees you wish to plant. It is very important to plan and prepare your site well ahead of time. This will help to ensure that your new trees are successfully established and will rocket into life in spring.
Select your site with care, taking into account the drainage, amount of sunlight and susceptibility to frost. Your new tree will be in this position for a long time! Dig a very large hole – at least twice the size of the anticipated root ball of your new tree. Now back-fill the hole with the removed soil mixed with well-rotted manure and compost. In this area, it will also pay to add some lime – soils in this area tend to be very acidic. Remember the old saying: “Dig a $50.00 hole for a $5.00 tree”. The better the preparation, the more your tree will thrive.