We have been burning large piles of lantana and other weeds that produce a lot of wood ash which I have been recycling in the garden. After the ashes have cooled completed I have sieved them into a large container for later use.
Wood ash is a good source of lime and potash, as well as magnesium and phosphoric acid, all of which are good for enriching the soil.
Because it’s alkaline you can use it to sweeten up compost heaps, which tend to be rather acid. Don’t overdo it – just sprinkle some on from time to time and turn it in.
If you’re composting leaves on their own to make a rich leaf mulch for the garden, sprinkle it in between layers to hasten the composting process.
If you have slugs attacking the leaves of your fruiting trees you can throw some wood ash amongst the foliage every few days. The dry ash dehydrates the slugs and they quickly drop off.
Sprinkle a few ashes around seedlings that are under threat from slugs and snails. They don’t like the texture and won’t crawl across it. Replenish it every few days, especially in wet weather, as rain will quickly leach it away.
Because of its alkalinity, make sure that you keep any wood ash away from acid-loving plants.