Is Milorganite Safe for Vegetables?
Milorganite is a fertilizer that is derived from processed heat-dried microbes found in Milwaukee Metropolitan Sewerage District wastewater. It is used commonly by farmers and home gardeners alike, and many wonder if they can use it on their vegetables.
Safety Based on Composition
Milorganite is composed of:
- 4 percent nitrogen
- 2 percent phosphates
- 1 percent potash
- 4 percent sulfur
- 2 percent iron
- No added chemicals
The composition of Milorganite indicates it is generally safe for vegetable gardens, as it was made from sustainable materials. The low levels of iron and nitrogen provide slow release fertilization, helping promote healthy vegetation.
Testing Results
Milorganite was tested thoroughly by the University of Wisconsin-Madison and found to be safe for use on vegetables. The results of the test indicated that using Milorganite had no adverse effects on plants, such as stunting and resulting in poor growth.
Tips for Using Milorganite on Vegetables
- Milorganite should be spread 2-4 weeks before planting, providing time for soil to absorb and break down the fertilizer.
- When planting vegetables, mix one-half to one pound of Milorganite per 100-square feet of soil.
- As vegetables mature, apply an additional two pounds of Milorganite per 100-square feet.
- If vegetables look pale, it may indicate a nitrogen deficiency and an additional application of Milorganite should be administered.
- Milorganite should be watered in if applied to vegetable plants.
Overall, Milorganite is safe for use on vegetables, providing vital nutrients and minerals to help sustain their health and growth. Milorganite should be applied correctly, with consideration to the type of vegetable plants, the nutritional needs of the plants and when the fertilizer is applied.
