How to Use Epsom Salt for Plants HGTV Are tomato and pepper seedlings getting too much light? Sometimes in the garden you have a few plants that just need a little extra attention. That is where these simple IV drip systems really shine. I use them on things like I love the way many leugumes leaves fold up at night. Candlestick plant (Cassa alata aka Senna alata) is one the more dramatic ones since it has such large leaves. Candlestick plant