Tag Archives: fruit tree diseases

Natural Insect and Disease Control: Apple Maggot.

apple_maggot_flyAlso known as apple fruit fly, the adult apple maggot fly is similar to the house fly and lays eggs inside the flesh of the apples around late July. They usually go unnoticed until you bite into an apple. The larvae overwinter in dropped fruit, so discarding and cleaning up fruit from the ground in the fall is a good idea.

You can make a trap to catch the flies before they lay their eggs. Mix one part molasses to nine parts water and add some yeast to encourage fermentation. Pour the beer-smelling liquid into small, plastic containers. Once fermentation subsides, hang the containers from your apple trees.

Another remedy; The Cooperative Extension of New Hampshire uses a bait made of 2 tsp ammonia and 1/4 tsp soap powder mixed in a quart of water. Distribute to smaller containers and hang them on the sunny side of the trees. Renew the bait if necessary.

See our main gardening page, Garden Circkles, for much more information than what is posted on this blog, including full articles on greenhouse growing, sustainable and organic tips, beneficial bugs, the latest techniques such as aquaponics and vertical growing and much more.

Leaf Curl.

Leaf Curl on Peach Trees and other fungus:
Peach leaf curl causes leaves of peaches and nectarines to discolor, thicken, pucker, curl, distort and eventually fall off. The fungus overwinters in these trees as spores, usually in the new buds. The rains splash these spores onto the emerging leaves, causing more problems.

Onion spray is very effective against disease organisms such as molds and fungus. California fruit grower Roger Dondero mixed up his own spray to see if it would help the leaf curl on his peach trees. Within a few weeks, the fungus on the leaves turned black and fell off after just spraying the trees heavily for three evenings in a row. Within a few weeks, all the fungus turned black and fell off. This spray can also be used on vegetables being destroyed by cutworms or aphids. One gardener states that he just ties the stems of wild onions to his plants to get rid of cutworms.

Put a few onions in a blender with water. Let this puree sit overnight and then strain the onions out so it will go through a spray bottle. Keep refrigerated so it doesn’t spoil. This will have to be re-applied each time it rains. You can add a few drops of dish soap or vegetable oil to the spray to get it to stick to the leaves better. Shake well before each application.