Everyone wants a safe and enjoyable “multimodal” interaction with nature, so pesticides and herbicides must be avoided entirely in the sensory garden, as they can be dangerous and even toxic.  Instead, plants with non-toxic, non-allergenic qualities should naturally pollinate through the help of insects only. If any thorny plants like roses are included in the design, they should be placed out of reach of users at the back of the beds. Young children should be able to roam freely without concerns about being poisoned.