Trees Are Ficus Trees Poisonous To Children? By Melody Lee Updated Nov 3, 2022 A child that gets the sap from a Ficus tree (Ficus benjamina) on his skin may have an allergic reaction that includes itching, stinging and redness. The symptoms are usually mild and do not last very long. Related How to Grow a Dragon's Blood Tree How Long Does it Take a Papaya Tree to Produce Fruit? How Long Do Sequoia Trees Live?