Community Garden Handbook

Organic Techniques

Organic Fertilizers

 

  • COMPOST COMPOST COMPOST!

 

  • Compost Tea

                Take a gallon bucket and fill halfway with compost
                Fill rest of way with water
                Add ¼ cup molasses
                Let sit in sun for 1-2 days. 
Pour liquid on to the roots of your plants and add solids to soil.


 There are many commercial organic fertilizers sold in garden stores large and small.

 

Organic Herbicides

 

  • Vinegar and Dish Soap

Use a funnel to place the following ingredients in a medium spray bottle approximately the size of a quart, but it doesn't have to be exact:

 

                1 cup of vinegar
                1/2 cup of regular dish soap (not dishwasher detergent)
                Fill the rest of the bottle up with water.

 

Shake well before each use. Spray mixture directly on the weed itself; if weed is out in the yard, be careful not to spray the grass! The vinegar is what kills the weeds, but the dish soap holds the vinegar in place so it stays on the plant instead of running off. This works great on grass or weeds in sidewalk or driveway cracks, too. Best time to spray is in the middle of the day when the sun is beating down on you.

 

Just a quick comment on the weed killers: Add dish soap to the vinegar and mix it with water to spot-weed the yard (usually 1 part dish soap, 2 parts vinegar, and 2 parts water). The dish soap makes the vinegar stick to the weed longer, and a couple of days baking in the sun should do the trick.

 

 Organic Fungicides

 

  • Control of Black Spot & Powdery Mildew

Powdery mildew is a fungal disease that affects beans, cucumbers, melons, peas, pumpkins, squash and strawberries as well as many fruit trees and roses. Black spot is a fungal disease that produces black spots on the leaves of infected roses. In severe cases, the plant can be defoliated. To remedy these problems, mix:

3 Tbs Baking Soda
2½ Tbs orange oil
One gallon of water

Spray the mix onto infected plants. Reapply as often as needed.

 

Organic Insecticides

 

  • Wood Ash
Probably the best organic way to get rid of rust flies, carrot weevils, wireworms, and other carrot pests is to soak the bed once a week with a thin mixture of wood ashes and water using a watering can.

 

  •  Garlic & Pepper Spray

Protect your garden plants from cabbageworms, caterpillars, hornworms, aphids, flea beetles and other chewing/sucking insects by routinely using a natural spray that you can make at home. The spray must be applied regularly, especially after a rainfall. Brew up a batch as follows:

6 cloves of garlic

1 Tbsp dried hot pepper

1-minced onion
1 
tsp pure soap (not detergent)

1 gallon hot water
Blend & let sit for 1 - 2 days.

Strain & use as spray. Ground cayenne or red hot pepper can also be sprinkled on the leaves of plants (apply when leaves are slightly damp) to repel chewing insects or added to the planting hole with bone meal or fertilizer to keep squirrels, chipmunks, dogs and other mammals away from your gardens. Be sure to reapply after rain.

 

  • To deter cucumber beetles, try planting a few radish seeds in each hill of cukes. Let it grow alongside the cucumbers all season. The strong smell or taste of the radish seems to keep the beetles away.
  • Homemade garlic or hot pepper sprays can protect your young seedlings from flea beetles and aphids. To prepare, combine finely chopped garlic and onions (or hot peppers) with water, let it steep for a while and then strain out particles. Spray vulnerable plants often, especially after rainfall. You can also sprinkle ground cayenne or other hot ground pepper directly onto leaves to deter chewing pests. This is most effective in the morning when leaves are moist with dew.
  • Control powdery mildew and fungi on garden crops by combining one cup of milk with nine cups of water and spray onto affected plants twice a week. Researchers believe the milk has a direct germicidal effect as well as indirectly stimulating the plants to become more resistant. 
  • Releasing large numbers of Lady Bugs or Praying Mantis into areas of your garden infested with insect pests is lots of fun and can be a very effective means of controlling aphids, mealy bugs, leaf worms, and many other pests. Lady Bugs should be released at night near the base of infested plants where they will seek out and devour insect pests. Praying mantis are voracious predators that will feed on many of the larger insect pests including grubs, beetles, leafhoppers and caterpillars. These beneficial insects are available for sale at garden centers and through mail order.
  • For some pests like aphids and caterpillars, a strong spray from a garden hose can knock them loose. It’s important to spray the underside of the leaves where most insect pests reside.
  • Bt (Bacillus thuringiensis) is a bacterial disease that is safe to humans but wreaks havoc on many caterpillar and larval stage pests including Colorado potato beetle, cabbage looper, and tomato hornworm. It is sold in the form of a soluble powder that is sprayed on the plant surface and is then ingested by the pest. Be sure to use the right type of Bt for the pest you want to control.
  • Homemade sprays are easy to make and use but must be applied regularly. Mix one tablespoon of dishwashing liquid per ½ gallon of water and spray insect pests directly to kill. It is best to spray plants on cloudy days or in the early evening when they are not in direct sunlight. It’s a good idea to rinse the soap residue off after a couple of hours to reduce leaf damage to sensitive plants. You can prepare garlic and hot pepper sprays to prevent insect pests from munching on plants. Mix several garlic cloves with water and steep overnight. Strain and spray on plants every few days or after rainfall. You can do the same using hot peppers in place of or in addition to the garlic. These bad tasting sprays can also deter small mammals.

 Organic Fire Ant Insecticide 


  •  Orange Oil Recipe for Fire Ants

6 oz. orange oil
1 Tbs. feed molasses
a squeeze of liquid dish soap

Add to a gallon jug and fill with water.

Use durring middle of day when most ants are in the mound. (hottest part of day) Pour directly onto mound, the orange oil dissolves the ants exoskeleton. 


  • Compost Tea
                Take a gallon bucket and fill halfway with compost
                Fill rest of way with water
                Add ¼ cup molasses
                Let sit in sun for 3-4 days. 

Pour directly onto mound, the molasses and compost let bacteria grow. This bacteria attacks the ants.



Organic Deer Deterring Tips

Mix one egg per gallon of water and spray on plants. Reapply once a week or after rain.

 

Tie unused fabric softener sheets onto trees and shrubs or on stakes around plants being bothered by deer. They seem to hate the smell, so buy the brand with the strongest scent and only replace if the scent has faded. Rain does not seem to hinder their effectiveness.

 


Best Way to Reduce Weeds

 

  • Prevention is the Best Medicine

You can't stop wind from blowing weed seeds into your garden or birds from dropping them from overhead. Nevertheless, you can employ a number of tools to keep them to a minimum.

 

  • Solarize Your Soil

Prepare your soil for planting, water it well and cover it with dark plastic. After four weeks, the sun's heat (as hot as 160ºF) will have killed any weed seeds and harmful microorganisms residing in the top few inches of the soil. Let the soil dry before planting and avoid disturbing it to prevent deeper lying seeds from reaching the top.

 

  • Avoid Imports

Weeds can be imported to your garden from the soil of plants received as gifts, a rotten veggie tossed off to the side or as part of compost or fertilizer (especially horse manure). Before adding compost, mulch or new soil to your garden, pot some to test it for weed sprouts.

 

  • Plant Through Plastic

This is great for smaller gardens. Prepare soil for planting, water it thoroughly and cover it with dark plastic. Make small slits in the plastic to plant your seeds. The plastic will keep weeds from sprouting, though it may be more difficult to add compost or soil amendments later if necessary.

 

  • Space Plants Appropriately

Spacing plants correctly allows crops to naturally shade the soil and prevents weeds from sprouting. The leaf tips of mature plants will just touch each other if spaced appropriately.

 

  • Mulch Like a Maniac

Once your plants are a few inches tall, weed thoroughly then mulch. Weed control is just one of the many benefits of mulching; it holds in moisture, adds nutrients to the soil, improves soil structure, prevents soil-borne diseases, encourages worms, prevents run-off and keeps flowers and veggies clean!

 

  • Get Down and Dirty

Pulling weeds by hand is still one of the most effective methods of weed control. Try to remove weeds before they set seed. Moist soil makes them easier to remove. If the tops are seedy or you're unsure of the weeds lifecycle (annual, perennial, etc.) don't compost them, bury them away from your garden.

 

  • Control Weeds with Water

Underground and drip irrigation systems deliver water only to the plants you're trying to cultivate. This minimizes the amount of moisture water-competing weeds have access to.

 

  • Plant Cover Crops

Planting cover crops (grains, clovers or legumes) over the winter will protect your soil from erosion, enrich it with nutrients and inhibit weed growth all at the same time. Cover crops planted during the growing season act as mulch around fruit trees, shrubs and perennial vegetables. Consult with your local extension agent or garden supply store to find out what types of cover crops work best for your climate and soil.

Comments (1)

Jacqueline Mills - Oct 27, 2008 1:33 PM

Do you know more or think some of these are wrong? Feel free to add new ideas here.