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Mexican Evening Primrose

Oenothera berlandieri

Mexican Evening Primrose
Groundcover

A low wildflower that covers the ground in soft pink, cup-shaped blooms in spring, with a smaller show in fall. It is tough and asks for little water, but it spreads readily by runners and seed, so where it goes matters.

Small
Full sunpreferred
Ask a designer about it
Mature sizeAbout 1′ tall; spreads well beyond where planted
Growth rateFast
Water useLow; may go dormant in summer if kept dry
SunFull sun; fewer flowers in shade
BloomPink, about 2″ across, in spring with a lighter flush in fall
Cold hardinessFully hardy in Phoenix winters
FoliageLow, soft green leaves; can redden with cold or drought
SpreadAggressive, by runners, underground stems and seed

Living with it in the Phoenix Valley

Watering

Follow the shrub, groundcover and succulent schedule in our Landscape Care guide. It gets by on very little. In summer it slows down in the heat and may go dormant without occasional water. Overhead watering can lead to leaf spotting, so drip is better.

Pruning

Shear or mow it to the ground in late summer or early fall. It returns with fresh growth and fall flowers.

Pests

Flea beetles can strip the leaves in early spring. Plants usually recover later in the season.

How our designers use it

Contained beds

Our designers use it only where hardscape holds it in: a bed bordered by concrete, a courtyard planter or a parkway strip.

Wildflower areas

On dry slopes and natural areas at the edge of a property, its spread can be an asset rather than a problem.

Good to know

Spreading

It travels by runners and seed into lawns, neighboring beds and cracks in paving, and it is hard to remove once established. We generally avoid it in mixed beds of slower plants.

Around the pool

Soft, thornless and low-litter, so it is comfortable near decks, as long as it is contained.

Pairs well with

Similar plants

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Picturing one in your yard?

Our designers can show you where it will thrive, what to plant beneath it and how it fits the rest of your landscape.

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