Flowers aren’t the only plants to blame for your watery eyes. Other things to look out for include: --High-pollen monoecious trees --Male trees --Ragweed --Pigweed or amaranth --Grass pollen --Shrubs like juniper and wisteria You don’t need to plant pollen-filled flowers for an interesting backyard landscape. Consider planting a succulent garden or xeriscaping your yard with low-pollen landscape plants if you suffer from severe pollen allergies.