Plant Tissue Culture PPT

More and more gardeners are making their own earth-friendly fertilizer and soil additive. Yet not all organic items are good for your compost heap or garden. Here are thirteen organic items that should not be added to your pile.

1. Bread and dairy - Although quick to mold, keep the scraps to a minimum as they invite rodents and roaches. Rotten cake and cheese also leave an unwanted smell.

2. Cooking Oil - Used oil, even if it is virgin olive, should not be part of the compost heap. They will coat moisture out. Use them to soak old newspapers that can be used as the bottom layer of mulch instead.

3. Human waste and hygiene products - Gross thoughts aside, these leave a bad smell, pose a health risk, and are just plain disgusting to have in the compost.

4. Meat, fish and bones - Not only do they attract unwanted animals into your compost heap, these meal leftovers take forever to decompose. They also stink during putrefaction.

5. Pet waste - Another smelly substance, never include kitty litter or dog poo as it could contain disease and bad bacteria. Dung from herbivores like cows and horses, however, are okay.

6. Processed food - First of all, the preservatives used to extend their shelf life will delay their decomposition. Second, the chemicals and artificial flavors could mess up the Nitrogen, Phosphate and Potassium content you're hoping for.

7. Processed paper - High-gloss paper has chemicals that could contaminate your compost with toxins. The same goes for the inks in colored paper. Stay away from colored cardboard boxes as well.

8. Treated grass - The grass clippings from the first two mowing trips should not be included in your compost. They contain the chemicals applied to the lawn.

9. Treated wood - The pest-deterrent chemicals in the wood will also deter the good bugs in your compost. Not only that, remember that the treatment was put in place to prevent decay.

10. Weeds - The bane of every gardener's existence, weeds are hard to kill. Leave them off because you would only be putting in either weed-killer or weed seeds into the compost.

11. Wood ash and sawdust - Both can adversely affect the decomposition processes. Burnt wood is a type of agent that is best placed in the soil. Sawdust is still treated wood, but in smaller particles.

To summarize, anything that has added chemicals or preservatives should be avoided. Anything that will attract pests is highly discouraged. Anything that stinks should not be in the list as well.

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