When should I apply soil amendments?

The application of soil amendments must take place at an appropriate time for maximum efficiency. Preparing your garden in early spring provides a solid foundation for the growing season. Late in the fall is the best time to apply amendments, as winter decomposition will help integrate the material into the soil. I time my amendments in accordance with the weather and the life cycles of the plants growing in my garden. The garden will respond best when the application of the amendment aligns with the natural rhythms.

Spring gardening requires proper timing. Amendments may be applied to the soil four to six weeks before planting. This will allow your nutrients to blend effectively within the soil. Soil temperatures must be above 50ºF to promote microbial activity within the soil. I watch for frost-free dates in my area. Your plants will get off to a better start with appropriately timed amendments.

There are some distinct advantages to working on soil improvement this time of year. Amendments can be applied after harvest in the fall and before the ground freezes. Colder temperatures and moisture during the fall will help decompose the amendments. Cover crops will protect amended soil over winter - I combined my amendments with winter rye to seize the best of both worlds. Your soil will awaken refreshed and full of vitality come spring!

Refrain from amending soil during problem conditions. Heavy rainfall causes nutrient losses before tidal flow. Frozen soils will not permit good incorporation. Waterlogged soils lack oxygen, hindering microbial activity. I always check the weather forecasts before making any changes. If made at the proper time, your amendments will remain effective.

Particular situations necessitate individualized approaches to timing. Winter dormancy is the appropriate time for amendments to most perennials. Soils with problem areas will need multiple applications of bountiful nutrients annually. I will always respond to the plant's response to make schedule changes. The individual needs of your garden will drive the ideal timing.

Begin with a simple seasonal calendar this year. Apply compost in the spring and fall. Monitor the plants and observe how they react to changing conditions. I fine-tuned my methods through observation over the seasons. Your own experience becomes the best guide for timing.

Read the full article: 10 Essential Organic Soil Amendments