Nutational chemonasty is a fascinating plant movement response to chemical stimuli, often observed in outdoor settings. For gardeners and plant enthusiasts looking to showcase this phenomenon in outdoor plant boxes, certain species stand out due to their pronounced reactions.

1. Mimosa pudica (Sensitive Plant): Known for its rapid leaf-folding response to touch or chemical changes, this plant vividly demonstrates nutational chemonasty.

2. Dionaea muscipula (Venus Flytrap): While famous for trapping insects, its trigger hairs also exhibit chemonastic movements when exposed to specific chemicals.

3. Oxalis spp. (Wood Sorrel): These plants fold their leaves in response to light and chemical cues, making them ideal for demonstrations.

4. Phaseolus vulgaris (Bean Plants): Their tendrils show nutational movements when exposed to chemical gradients, perfect for outdoor observation.

5. Helianthus annuus (Sunflower): Though slower, sunflowers exhibit subtle nutational chemonasty as they track light and respond to soil chemicals.

For optimal results, ensure your plant boxes receive adequate sunlight and moisture. Experiment with mild chemical stimuli (e.g., diluted vinegar or salt solutions) to trigger visible responses. These plants not only educate but also add dynamic beauty to any garden!