Students could replicate the experiment using cress, but instead of focusing on the soil uptake, give the plants different quantities of fertiliser in their soil to test its effect on growth.

Students could replicate the experiment using cress, but instead of focusing on the soil uptake, give the plants different quantities of fertiliser in their soil to test its effect on growth.

But these tools are unlikely to give you the best bulb planting results for the least effort. On the other gardener's glove, specialized tools like short- and long-handled bulb planters ...