Fall has come, time to unsheathe your weapons to have an astounding garden come spring.
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Also very helpful: our Moon Planting calendar
In fall, upgrade the soil of your vegetable patch! As you harvest your last vegetables, throw old plants and leaves out to the compost, checking first that they aren’t diseased.

After that, eliminate weeds manually or with natural weed-fighters and avoid having them grow back with mulch. Break the ground up somewhat with a toothed spade and add organic matter such as compost or dead leaves. What counts here is to ensure the soil is covered, so that nutrients don’t get washed away with rains. Cover also reduces weed growth.
Fall is also the perfect season to start planting certain plants and vegetables. Some of the veggies you can plant in fall are: cabbage, winter lettuce, turnip, sorrel, and garlic.

Also remember to weed flower beds and run the hoe along your plants to destroy insects that might have found refuge in the topsoil, such as slugs.
Before the first winter frosts set on, bring your garden boxes and containers inside or protect them, especially when they fear the cold. Pelargonium and summer flowering bulbs can be stored in the cellar. Mediterranean or tropical plants (bougainvillea, oleander, olive tree, citrus, cactus, etc.) must overwinter in a space that doesn’t freeze but still gets light.

Make the best of fall and remove dead or sick branches. But don’t follow through with pruning all your trees and shrubs in fall, that would be counter-productive since wounded stems are more vulnerable to the cold and to freezing.
However, it’s the perfect time to prepare new plantations !

Rose trees and shrubs planted in fall, as well as certain fruit trees, will benefit from having been planted in that season and will grow stronger. Remember to add natural fertilizer and compost.