North America Native Plant

Eggleaf Monkeyflower

Botanical name: Mimulus ovatus

USDA symbol: MIOV2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Mimulus bigelovii (A. Gray) A. Gray var. ovatus A. Gray (MIBIO)   

Eggleaf Monkeyflower: A Rare Nevada Gem for Native Plant Enthusiasts Meet the eggleaf monkeyflower (Mimulus ovatus), one of Nevada’s most elusive native wildflowers. This charming little annual might not be the showiest plant in your garden, but for native plant enthusiasts and collectors of rare species, it’s a true treasure ...

Rare plant alert!

Region: Conservation status by state

Status: S1S2Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Eggleaf Monkeyflower: A Rare Nevada Gem for Native Plant Enthusiasts

Meet the eggleaf monkeyflower (Mimulus ovatus), one of Nevada’s most elusive native wildflowers. This charming little annual might not be the showiest plant in your garden, but for native plant enthusiasts and collectors of rare species, it’s a true treasure worth getting to know.

What Makes Eggleaf Monkeyflower Special?

The eggleaf monkeyflower is a small annual forb that belongs to Nevada’s exclusive club of endemic plants. As its common name suggests, this little wildflower produces distinctive egg-shaped leaves that help distinguish it from its more common monkeyflower cousins. The plant typically produces small, snapdragon-like flowers in cheerful yellow hues, often adorned with delicate red spots that add character to its modest blooms.

Where Does It Call Home?

This rare native is found exclusively in Nevada, making it a true Silver State specialty. Its limited geographic distribution contributes to its special conservation status, and you won’t find this little beauty growing wild anywhere else in the world.

Important Conservation Note

Before you get too excited about adding this plant to your garden, there’s something crucial to know: eggleaf monkeyflower has a Global Conservation Status of S1S2Q, which indicates it’s quite rare and potentially vulnerable. This means if you’re interested in growing this species, you should only obtain seeds or plants from reputable sources that practice responsible collection and propagation methods.

Garden Appeal and Design Role

While eggleaf monkeyflower won’t win any prizes for being a garden showstopper, it has its own quiet charm that appeals to certain types of gardeners:

  • Native plant collectors who appreciate rare and unusual species
  • Wildflower garden enthusiasts creating authentic Nevada landscapes
  • Rock garden designers looking for small-scale native annuals
  • Conservation-minded gardeners supporting rare plant preservation

Growing Conditions and Care

As a Nevada native, eggleaf monkeyflower is adapted to the state’s challenging growing conditions. Here’s what this little survivor prefers:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils that don’t stay consistently moist
  • Water: Moderate moisture during germination and early growth, then quite drought-tolerant
  • Hardiness: Likely suited to USDA zones 5-8

Planting and Care Tips

Growing eggleaf monkeyflower successfully requires mimicking its natural Nevada habitat:

  • Direct sow seeds in fall for natural winter stratification
  • Choose a location with excellent drainage to prevent root rot
  • Provide some protection from aggressive weeds and competing plants
  • Water sparingly once established – remember, this is a desert-adapted species
  • Allow plants to self-seed for potential natural regeneration

Wildlife and Pollinator Benefits

Like other monkeyflowers, eggleaf monkeyflower likely attracts small native bees and other tiny pollinators. While it may not be a major pollinator magnet due to its small size and limited distribution, every native plant contributes to the local ecosystem’s web of relationships.

Should You Grow Eggleaf Monkeyflower?

This plant is definitely not for every gardener. Consider growing eggleaf monkeyflower if you:

  • Are passionate about rare native plants and conservation
  • Live in Nevada or have similar growing conditions
  • Can source seeds or plants responsibly from ethical suppliers
  • Appreciate subtle beauty over flashy garden displays
  • Want to support plant conservation through cultivation

However, if you’re looking for a reliable, showy annual for general garden use, you might be better served by more common native alternatives like other monkeyflower species that are more widely available and less conservation-sensitive.

The Bottom Line

Eggleaf monkeyflower represents the fascinating world of rare native plants that exist quietly in specific corners of our landscape. While it may not be the right choice for every garden, for the right gardener in the right situation, it offers a unique opportunity to connect with Nevada’s special botanical heritage while supporting conservation through cultivation. Just remember: if you decide to grow this rare beauty, do so responsibly and help ensure future generations can enjoy this special little wildflower too.

Eggleaf Monkeyflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Mimulus L. - monkeyflower

Species

Mimulus ovatus (A. Gray) N.H. Holmgren - eggleaf monkeyflower

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA