The Mexican petunia is well adapted to partially shaded microclimate locations in the Inland Empire where it grows well with normal winter rainfall and regular summer water. It is a colorful flowering accent shrub for courtyard and southwestern style plantings in small spaces and in group plantings. Monthly watering from spring through fall will enhance its spring flowering cycle and help maintain good foliage character. It should be noted there are several winter months marked by an asterisk (*) when rains can provide sufficient moisture and irrigation is not needed. The high and low range of moisture indicates it can grow with varying amounts of water depending upon exposure conditions and size.

For more information on how to use this Irrigation Schedule and Graph, follow this link.

For information how to calculate your irrigation system’s schedule and precipitation rate, please follow this link.