The Mortaguas

Southwest Corner Pollinator Bed

90 Independence Wy, Coopersburg, PA 18036

The project

A pollinator bed for the southwest corner

The southwest corner of the backyard today — empty lawn, full sun, already fenced
The starting point — an empty corner, full sun, already fenced.
The brief

Right now it's just an empty corner of the backyard — full sun, already fenced, doing nothing.

The plan is a small native flower bed that pulls in pollinators and keeps color coming from spring through fall.

The neighborhood runs neat and traditional — clipped boxwoods, barberry, tidy shrubs. So this bed is built to fit right in: a crisp edge and mulch between the plants, just swapping the evergreen shrubs for waves of native color.

The site
Full sun · SW exposure
Clay · loosen, don't enrich
Medium moisture
Fenced · no deer worry
The approach
  • Loosen the clay so roots and water can move — but skip the compost. These natives want lean-to-average soil; rich soil just makes them floppy.
  • Butterfly weed gets a sharp-drained pocket; swamp milkweed takes the damp low spot — monarch hosts in both.
  • Plant in drifts and keep a crisp mulched edge — clean and intentional, not wild.
  • Leave stems and seedheads through winter for the birds; cut back in early spring.
The plan

Planting Plan

A to-scale plan of the quarter-circle bed (~113 sq ft). Each circle is one plant at its on-center spacing (~19", even), tiered from tall plants against the fence down to low edgers at the lawn edge. 45 plants total.

12 ft fence 12 ft fence ≈113 sq ft · grid = 1 ft · ~19" spacing Plant Layout — 45 plants (to scale) BACK — tall, by fence Blue Wild Indigo ×3 New England Aster ×2 MIDDLE (2–4 ft) Smooth Blue Aster ×3 Foxglove Beardtongue ×2 Wild Bergamot ×2 Purple Coneflower ×2 Dense Blazing Star ×2 Garden Phlox 'Jeana' ×2 Swamp Milkweed ×2 Mountain Mint ×2 Showy Goldenrod ×2 FRONT — low, lawn edge Eastern Red Columbine ×3 Moss Phlox ×3 Golden Alexanders ×3 Wild Geranium ×3 Butterfly Weed ×3 Black-eyed Susan ×3 Aromatic Aster ×3 TOTAL: 45 plants
The plants · 18 species, ~45 plants

Plant Palette

All native to Eastern PA, chosen for pollinator value and overlapping bloom. Arranged by height, from the tall corner anchors to the low front edge.

Back — the corner
anchors, ~4–5 ft, against the fence (kept below the fence top)
Blue Wild Indigo
Blue Wild Indigo
Baptisia australis
May–Jun · blue
Soil: Dry–medium
shrub-like anchor
Smooth Blue Aster
Smooth Blue Aster
Symphyotrichum laeve
Sep–Oct · blue-purple
Soil: Medium, well-drained
2–4 ft, late nectar
New England Aster
New England Aster
Symphyotrichum novae-angliae
Aug–Oct · purple
Soil: Medium
takes clay well
Middle
2–4 ft, the heart of the bed
Foxglove Beardtongue
Foxglove Beardtongue
Penstemon digitalis
May–Jul · white
Soil: Dry–medium
bridges spring→summer
Wild Bergamot
Wild Bergamot
Monarda fistulosa
Jun–Sep · lavender
Soil: Dry–medium
pollinator magnet
Purple Coneflower
Purple Coneflower
Echinacea purpurea
Jun–Aug · pink-purple
Soil: Dry–medium
finch seedheads
Dense Blazing Star
Dense Blazing Star
Liatris spicata
Jul–Aug · purple
Soil: Medium–wet
vertical accent
Garden Phlox
Garden Phlox 'Jeana'
Phlox paniculata
Jul–Aug · pink
Soil: Medium
mildew-resistant
Swamp Milkweed
Swamp Milkweed
Asclepias incarnata
Jul–Sep · pink
Soil: Medium–wet (damp/low spot)
🦋 monarch host
Mountain Mint
Short-toothed Mountain Mint
Pycnanthemum muticum
Jul–Sep · silvery white
Soil: Medium
#1 pollinator plant
Showy Goldenrod
Showy Goldenrod
Solidago speciosa
Aug–Oct · yellow
Soil: Dry–medium
clumping, not weedy
Front — facing the lawn
under 2 ft, the edgers
Eastern Red Columbine
Eastern Red Columbine
Aquilegia canadensis
Mar–May · red & yellow
Soil: Dry–medium
⭐ earliest
Moss Phlox
Moss Phlox
Phlox subulata
Apr–May · pink/lavender
Soil: Dry–medium
evergreen carpet
Golden Alexanders
Golden Alexanders
Zizia aurea
Apr–May · yellow
Soil: Dry–wet (adaptable)
swallowtail host
Wild Geranium
Wild Geranium
Geranium maculatum
Apr–Jun · pink-lilac
Soil: Medium
spring filler
Butterfly Weed
Butterfly Weed
Asclepias tuberosa
May–Aug · orange
Soil: Sharp-drained / lean only
Must follow: needs extremely well-drained, lean soil — sand, gravel, or rocky ground is ideal. Will not tolerate clay or wet feet (it rots). Plant in a gritty pocket, never amended clay.
⚠ Critical soil🦋 monarch host
Black-eyed Susan
Black-eyed Susan
Rudbeckia fulgida
Aug–Oct · gold
Soil: Dry–medium
long bloomer
Aromatic Aster
Aromatic Aster
Symphyotrichum oblongifolium
Aug–Oct · purple
Soil: Dry–medium
low fall mounds
Your corner, through the year

Spring · Summer · Fall

How the bed fills in and blooms across the seasons — each render shows only what's actually in flower at that point, with the plant list right below it.

The corner bed in spring
🌸 Spring

Fresh color as the bed wakes up — pinks, yellows, blue, and white.

In bloom
  • Eastern Red Columbine red & yellow, earliest
  • Moss Phlox low pink-lavender carpet
  • Golden Alexanders yellow umbels
  • Wild Geranium pink to lilac
  • Blue Wild Indigo blue spikes, late spring
  • Foxglove Beardtongue white, late spring

Coneflower, bee balm, milkweeds and the asters are up as green growth — not yet flowering.

The corner bed in summer
☀️ Summer

Peak bloom and prime monarch season — purples, pink, and a pop of orange.

In bloom
  • Butterfly Weed orange · monarch host
  • Swamp Milkweed pink · monarch host
  • Wild Bergamot lavender pom-poms
  • Purple Coneflower pink-purple daisies
  • Dense Blazing Star purple spikes
  • Garden Phlox 'Jeana' pink panicles
  • Mountain Mint silvery · #1 pollinator

The spring plants and the fall asters & goldenrod are full, leafy foliage now.

The corner bed in fall
🍂 Fall

Purple, blue, and gold, carrying color right to frost.

In bloom
  • New England Aster purple, ~4 ft
  • Smooth Blue Aster soft blue, ~3 ft
  • Aromatic Aster low purple-blue mounds
  • Showy Goldenrod bright yellow plumes
  • Black-eyed Susan gold, dark centers

Coneflower, bee balm and milkweeds stand as seedheads for the birds; the spring plants have died back.