Winter is just beginning to set in, allowing extra time for gardening in mild soil temperatures and mostly calm days. The winter forecast from the Bureau of Meteorology for southern Tasmania is for warmer than average temperatures and average rainfall. This is pleasant for us humans but not so good for fruit set, much of which requires a serious number of cold nights.
Cold winters ensure a good crop of apples, cherries, pears,
nuts and berries, which have a chill factor. This means they require a certain
number of hours below 7C to ensure an even bloom period. However, during mild
winters, as is forecast this year, the chilling requirement may not be met and could
result in uneven bloom, and hence uneven pollination and less fruit set. The
table below suggests the chill hours required by various fruits. Of course
within, for example, apples, there are hundreds of varieties, each differing
slightly in its requirements but this table gives a general guide.
Apple
300 - 1200 |
Chestnut 400 - 750 |
Apricot 300 - 1000 |
Almond 400 - 700 |
Cherry – 500 - 800 |
Walnut 400 – 1500 |
Fig 100 - 500 |
Avocado NONE |
Grapes 100 - 500 |
Citrus NONE |
Kiwi 400 - 800 |
Pear 150 - 1500 |
Peach 150-1200 |
Persimmon 100 - 700 |
Pecan 150 - 1600 |
Plum 275 - 1000 |
Nectarine 150 - 1200 |
Quince 100 - 500 |
Pomegranate 100 - 300 |
Olive 400 - 700 |
Winter Sheet mulching
Now is the perfect time for sheet mulching. I have several
shrubbed areas I like to keep more or less grass free to reduce maintenance so
here is what I do.
1.
More or less cut the grass and weeds as low as
possible and leave them on the surface. or trample down flat.
2.
Throw over any vegetable scraps (even fresh),
lawn clippings, plant clippings and prunings, mushroom compost, blood and bone.
3.
Completely and thoroughly cover it all with
cardboard. Dampen down. Don’t worry too much about some sticky tape or coloured
labels but I don’t use the shiny cardboard as it can take ages for water to get
into it.
4.
Next put old manures to hold down the cardboard.
Dampen again.
5.
Lastly cover with as much straw or other
weed-free mulch as you can afford; 20 cms is good. Make it really dense and not
too fluffy or you will soon see the cardboard.
6.
Grab a cup of coffee, pull up a seat, smile and
survey your work!
If you want to use a similar method in your herb garden or
perennial vegetable area, use wet newspaper instead of cardboard, as it is
easier to get it around smaller plants. Lay it 10 sheets thick and generously
overlapped.
If you want to make a new vegetable garden bed, then, after
mowing the grass and weeds down, sprinkle the ground generously with lime
before following the cardboard or newspaper method.
Winter herbs for health and flavour
Do you love pesto and lament the end of fresh basil from
your garden? Well I make a wonderful, winter pesto with chervil and almonds / nettles
and pistachios / parsley and walnuts.
There are so many lovely herbs that either grow and thrive
only in winter or continue to hold their colour and flavour even in winter. The
former includes the slightly aniseed chervil, with its pretty, soft ferny
leaves which I grow as a block and clip by the handful, with scissors. Also in
this category is coriander with its robust flavour and growth habit. Parsley is
a fabulous winter herb, readily self-sows and is useful all through winter in
meals and as a wonderful source of vitamin C, in our climate where good,
organic oranges are rare.
Interestingly, all these are members of the Umbelliferae or
carrot family. The family also includes angelica, asafoetida, caraway, cumin,
dill and lovage, to name a few.
Rocket is another herb that germinates and thrives during
winter so add a few to any pesto. Nettles are wonderful with walnuts or
pistachios in a pesto, or as a pot of delicious tea; one of my favourites.
Wasabi greens are a new addition to our gardens and give a great little punch
and flavour to any dish, raw or lightly cooked. Easily self sows.
Other herbs that hold their colour and flavour in winter include
rosemary, thyme, oregano and marjoram (but they do die down to a flat ground
cover), winter savory, bay and sage, although sage should be picked sparingly
as it is much less vigorous in winter.
Seeds to sow in June Sow
in the garden: Broad
beans Salad
and spring onions Shallots Chives English
spinach Radishes
Sow
in trays to plant out later: Brassicas Globe
Artichokes Coriander Chervil Lettuce Rocket Asian
greens |
Plant out Garlic
Asparagus
crowns Divide
rhubarb Winter
herbs Winter
flowering annuals Globe
artichokes Sunchokes Bulbs
Asian
greens Lettuce Spinach |
Books for winter reading
Vegetable
Literacy by Deborah Madison (A mammoth book of every vegetable and herb
imaginable – includes history, geography, culture and cooking) The
Generous Earth by Philip Oyler (A beautiful book about peasant life in
the Dordogne after WW2; the natural cycles of the farming and foraging life
before commerce and tourism.) Japanese
Farm Food by Nancy Singleton Hachisu (How a modern, young American woman
married a Japanese farmer and learned to eat from the farm and cook by the
seasons….. and so, so much more) |
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