How to Grow Native Host Plants for Pollinators

Native Host Plants for Pollinators

Mixed species (region-dependent)

mixed

Native host plants are plants that serve as food sources for butterfly and moth caterpillars, as well as nectar and pollen sources for adult pollinators. These plants are essential for supporting local pollinator populations and are adapted to thrive in their native regions. Creating a pollinator garden with native host plants supports the complete lifecycle of butterflies, moths, and other beneficial insects.

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Example Native Host Plants for Pollinators timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Native Host Plants for Pollinators

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Native Host Plants for Pollinators

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Native Host Plants for Pollinators dates for your own zip code.

Growing Conditions

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Sun: Full sun (6-8 hours) for most native plants; some woodland natives prefer partial shade (3-6 hours)
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Water: Water needs vary by native plant type; once established, native plants are drought-tolerant. Water new transplants regularly the first growing season until roots establish. Reduce supplemental watering as plants mature to encourage deep root systems.
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Spacing: Varies widely (12-36 inches) depending on plant species; consult native plant guides for your region inches
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Days to maturity: Varies; most native perennials flower in year 2-3 after planting
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Planting depth: Match to seed size; small seeds surface-sow or barely cover; larger seeds plant at depth equal to 2-3x seed diameter

Soil

Type: Well-draining soil matched to native habitat (prairie, woodland, meadow, wetland, or desert)
pH: 5.5-7.5 (varies by plant species and habitat type)
Amendments:
Compost for organic matter Native soil from local sources when possible Mulch (2-3 inches) to suppress weeds and retain moisture Avoid synthetic fertilizers; allow natural nutrient cycling

Growing Zones

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Varies by region; select native plants for your specific USDA zone and ecoregion

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b

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Growth Stages

1

Seed Preparation & Stratification

4-12 weeks (varies by species)

Many native plant seeds require cold stratification (moist chilling period) to break dormancy, mimicking winter conditions

Collect seeds in fall, stratify in refrigerator for 4-12 weeks in moist sand/peat, or direct-sow in fall for natural stratification. Keep soil consistently moist but not waterlogged during stratification.

2

Germination & Seedling

2-4 weeks

Seeds sprout and develop cotyledons and first true leaves; seedlings are small and tender

Keep soil moist, provide bright light (indoors use grow lights), maintain temps 60-70°F. Reduce watering gradually as seedlings grow. Harden off before transplanting outdoors.

3

Vegetative Growth

Several months to 1-2 years

Plant develops root system and foliage; herbaceous and woody plants establish branching structure

Water regularly during first growing season to establish deep roots. Mulch to suppress weeds. Most native perennials do not require staking or pruning. Let plants grow naturally.

4

Flowering & Nectar Production

Weeks to months depending on species; succession blooms extend season

Plant blooms with flowers that attract and feed adult pollinators (bees, butterflies, moths, hummingbirds)

Do not deadhead spent flowers—allow some to remain for seed production and late-season insect food. Provide continuous blooms by selecting plants with staggered bloom times (spring, summer, fall).

5

Seed Production & Caterpillar Support

Late summer through fall and winter

Flowers set seed; foliage serves as host plant for butterfly and moth caterpillars that feed on leaves

Allow native plants to set seed and mature naturally. Do not use pesticides or herbicides. Accept some leaf damage from caterpillars—this is the goal! Leave seed heads standing through fall and winter for food and shelter.

Companion Planting

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Plant with:

Milkweed species (Asclepias) for Monarch butterflies Coneflowers (Echinacea) Black-eyed Susans (Rudbeckia) Wild bergamot (Monarda fistulosa) Blazing star/Liatris (Liatris spicata) Asters (Symphyotrichum species) Joe-Pye weed (Eutrochium) Goldenrod (Solidago) Native grasses (Panicum, Andropogon, Bouteloua) Wild indigo (Baptisia) New England aster (Symphyotrichum novae-angliae) Thistles (Cirsium species) Nettles (Urtica species) Parsley (Petroselinum) for Swallowtail host plant

Avoid planting near:

Non-native ornamental plants that may outcompete natives Areas treated with herbicides or insecticides Invasive species (Japanese knotweed, garlic mustard, buckthorn) Heavily fertilized lawns Dense shade from large trees that limits light for native flowers

Common Pests

  • Tolerate small populations; encourage natural predators (ladybugs, lacewings). Spray water to dislodge. Avoid insecticides that harm beneficial insects.

  • Hand-pick early morning. Use pheromone traps away from native plants. Avoid broad-spectrum pesticides; they harm pollinators.

  • Use fencing (7-8 feet tall) or select deer-resistant native plants. Deer repellents have limited effectiveness.

  • Ensure good air circulation, avoid overhead watering. Remove infected leaves. Sulfur dust acceptable for organic gardens if severe.

  • Remove infected foliage, avoid wetting leaves. Most native plants are disease-resistant; disease often indicates poor site conditions.

Uses

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Monarch Butterfly Host Plant

Wildlife

Milkweed species are the exclusive host plants for Monarch butterfly caterpillars; without milkweed, Monarchs cannot complete their lifecycle. Growing milkweed is essential for supporting declining Monarch populations. [source]

🦋

Swallowtail & Papilio Caterpillar Support

Wildlife

Native plants in the Apiaceae (parsley, fennel, dill, carrot) and Rutaceae (citrus, prickly ash) families support Swallowtail butterfly caterpillars. These plants ensure diverse butterfly populations. [source]

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Nectar & Pollen for Adult Pollinators

Wildlife

Native flowering plants provide nectar and pollen energy sources for adult butterflies, moths, bees, hummingbirds, and beetles. Continuous blooming from spring through fall maximizes pollinator food availability. [source]

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Shelter & Overwintering Habitat

Wildlife

Native plants with standing stems, dense growth, and seed-bearing structures provide shelter, nesting sites, and winter survival habitat for butterflies, bees, and beneficial insects. [source]

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Low-Maintenance Landscape Design

Household

Once established, native plants require minimal water, fertilizer, or pesticide inputs. They are adapted to local climate and soil, making them easier and less costly to maintain than non-native ornamentals. [source]

Harvest Tips

For seed collection: Allow flowers to fully mature and dry on plant, harvest seed heads in late summer/fall when they turn brown/papery. Store in cool, dry place. For live plants: This is not a harvest crop—the goal is to support pollinator lifecycles. Allow caterpillars to feed freely, do not harvest foliage. Leave seed heads standing through winter.

Fun Facts

  • 🌱 Monarch butterflies lay their eggs exclusively on milkweed plants; a single Milkweed plant can support dozens of caterpillars during peak season.
  • 🌱 Some native plants produce toxic compounds that caterpillars sequester in their tissues, making the caterpillars and resulting butterflies poisonous to predators—a survival strategy called sequestration.
  • 🌱 Native plants have coevolved with local pollinators over thousands of years; using regionally appropriate natives ensures maximum pollinator reproduction and biodiversity.

Gardening Terms

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