Create a Butterfly Garden in 6 Steps

Butterflies—flying flowers that dazzle—are declining due to pesticides and habitat loss. Any garden, even containers, can help. Their needs are simple: food, water, sun, safe family space. Here's how to build habitat.

1. Plant Diversity

Butterflies want nectar from diverse flowers in large color blocks—like a "lunch open" sign. Guidelines:
• Native to your area
• Multiple species blooming simultaneously
• Mix annuals and perennials
• Varied sizes, shapes, colors
• Color blocks: 3.5×3.5 ft minimum single species/color
• Continuous bloom spring to late summer

Nectar Plants

California natives butterflies love: Aster family, buckwheats (Eriogonum), coyote brush (Baccharis), mallows (Malacothamnus), monardella (Monardella), sages (Salvia).

Caterpillar Host Plants

Adults lay eggs only on plants their caterpillars eat—species-specific. Monarchs only on milkweed (Asclepias); anise swallowtails eat many carrot-family plants; variable checkerspots need sticky monkeyflower (Mimulus aurantiacus) or California bee plant (Scrophularia californica).

Key host plants:
• Milkweeds: monarchs only
• Buckwheats: 15+ butterfly species
• California lilacs (Ceanothus): 6+ species

Oaks (Quercus) host many butterflies/moths—choose natives. Acmon blues mate on California buckwheat (Eriogonum fasciculatum). Don't forget moths—9–10 species per butterfly species. California clearwing moth on thickleaf monardella (Monardella hypoleuca).

2. Full Sun

Cold-blooded butterflies need sun to warm up. Brandegee sage (Salvia brandegeei) loves heat and feeds many. Sunny rocks provide radiant perches.

3. Water

Butterflies "puddle" in wet ground for moisture, minerals, salts. Shallow container or can lid buried with water = instant puddle. Empty/refresh often to avoid mosquitoes. Gentle water feature splashing on soil/rocks also works.

4. Protect Egg-Laying Sites

Don't clean up fall/winter—caterpillars pupate/overwinter in dry spots between rocks and leaf litter. Wait until spring after caterpillars emerge. Red buckwheat (Eriogonum grande var. rubescens) shown as host.

5. No "'Cides"

Insects sensitive to toxins. Pesticides, herbicides, fungicides, Bt (bacterial insecticide) are counterproductive. Tolerate 10% damage—good bugs control bad bugs. Natural balance. View insects as guests, not pests.

6. Keep Learning

Resources: California Native Plant Society; Butterfly Gardening (Xerces Society/Smithsonian); UC Davis (Northern CA foothills/Sacramento Valley); Regional Parks Botanic Garden (SF Bay Area); Las Pilitas Nursery (Southern CA); North American Butterfly Association (LA).

Shown: Common buckeye (Junonia coenia) on California buckwheat.