Monarch butterflies (Danaus plexippus) are one of North America’s most recognizable pollinators. They depend on native milkweed to raise their young and nectar-rich flowers for food. Over the past several decades, habitat loss, pesticides, and climate change have caused their numbers to decline. However, while some years bring encouraging population increases, western monarchs still need our help.
Monarchs in Ventura County
Several factors have reduced monarch populations:
Ventura County provides valuable habitat for western monarchs. They migrate through our area, breed here, and sometimes spend the winter along the coast. However, development and the loss of native plants have reduced the habitat they need. By planting native species, local gardeners can help rebuild these important spaces. Unfortunately, development and the loss of native plants have reduced the habitat they need.
Migrating Monarchs vs. Ventura County Monarchs
Most western monarchs migrate between California’s coast and inland breeding areas each year. In Ventura County, our mild climate allows some monarchs to stay and breed much of the year instead of making the full migration.
Whether they migrate or remain local, monarchs need native milkweed, nectar plants, and pesticide-free gardens to thrive.
Why Monarchs Are Declining
Several factors have reduced monarch populations:
- Habitat loss from development
- Loss of native milkweed
- Fewer nectar plants
- Pesticide use
- Climate change and drought
These challenges make it harder for monarchs to complete their life cycle and migration.
Plant Native Milkweed
Monarch caterpillars can only eat milkweed. Without it, they cannot survive.
In Ventura County, native species such as Narrowleaf Milkweed (Asclepias fascicularis) and Showy Milkweed (Asclepias speciosa) provide the best habitat for breeding monarchs.
Where Can I Buy Milkweed in Ventura County, California?
1 gallon milkweed
available now in our nursery
Pick up only. Our one gallon is lush and has multiple stems.
Milkweed – 4×5 inch containers
Available now in our nursery
Great deal when you have time for the milkweed to settle in the right way.
Grow Nectar Plants
Adult monarchs need nectar throughout the growing season. Plant a variety of California native flowers to provide a steady food source.
- California Buckwheat
- California Fuchsia
- Cleveland Sage
- Black Sage
- Coyote Mint
- California Goldenrod
- California Aster
These plants also support bees, hummingbirds, and other beneficial pollinators.
Skip the Pesticides
Many pesticides harm butterflies and other beneficial insects. Instead, encourage natural predators and build a healthy, balanced garden with diverse native plants.
Create Wildlife Habitat
Leave a few natural areas in your garden. Leaf litter, seed heads, and dense plants provide shelter for butterflies and many other beneficial insects.
Every Garden Helps
You do not need a large yard to make a difference. A few native milkweeds and nectar plants can provide food and shelter for monarchs.
Even so, you do not need a large yard to make a difference. A few native milkweeds and nectar plants can provide food and shelter for monarchs.