Turnips and radishes also have a very limited root system. They only pull up nutrients from very close to the plant and from a limited depth under the plant.
We work up our soils for a few years before planting a new area of daffodils. As a cover crop over the new soils I plant turnips in the fall. These represent three different areas where we were working on improving the soils.
The three different groups of turnips were representative of about a 5,000 square foot area EACH. All of the areas were planted on the same day, same rainfall, approximately the same sunshine, same seed planted from the same pound of seed and then picked all on the same day so all of these are the same age.
Now if you wanted good sized daffodil bulbs, which patch of soil would you plant your daffodils in:-)) Soil varied in PH and primary plant nutrients.
You can plant radishes in between your rows of daffodils to experiment with how long it takes them to get to the best bulb sizes. Experiment with half day morning sun, half day afternoon sun. Full shade, full sun what ever soil types you have and you can get an idea of how your daffodils will grow in that area. Keith Kridler Mt. Pleasant, Texas
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