Why Fall is the Best Time to install Native landscapes along the Main Line
Thinking about adding native plants to your Philadelphia or Main Line garden? Fall might be the most powerful time of year to plant and establish a thriving native landscape.
Most people think of spring as planting season, and for annuals and vegetables, they’re absolutely right. It’s that time of year when everything bursts into growth, and it just feels natural to get your hands in the soil. But when it comes to native perennials, trees, and shrubs in the Philadelphia region, fall is actually the best time to plant for long-term success.
Why Fall is Ideal for Native Plant Landscaping in Philadelphia
In the fall, native plants shift their focus from pushing new leaves and flowers to strengthening their root systems. By planting in autumn, you’re aligning with this natural rhythm. Your native perennials and shrubs will spend the cooler months developing deep roots that anchor them for years to come. When spring arrives, they’ll be ready to take off—healthier, fuller, and more resilient to the heat of summer.
This timing is especially valuable for homeowners across the Main Line and Philadelphia suburbs who want to build low maintenance native gardens that can handle our region’s clay soils, hot summers, and heavy rain. A strong fall planting sets the stage for a native landscape that thrives with less watering and less fuss.
Benefits of Fall Planting for Native Perennials and Shrubs
Planting in the fall offers several practical advantages for native landscape design:
Bigger root systems, faster establishment: Nurseries often offer more mature plants in autumn, giving your garden a strong start before winter.
Reduced transplant stress: Cooler temperatures and steady rainfall in the Philadelphia area create perfect conditions for new root growth.
Less maintenance: Fall’s natural rainfall helps reduce watering needs compared to spring installations.
Spring impact: Native plants installed in fall will leaf out earlier, bloom more fully, and attract pollinators right away.
Best Native Plants for Philadelphia and the Main Line
When choosing plants, look for species naturally adapted to the local climate and soil. Some of our favorite native plants for Philadelphia gardens include:
Amsonia tabernaemontana ‘Grande’ (Bluestar)
Cercis canadensis (Redbud)
Magnolia grandiflora (Southern Magnolia)
Phlox subulata ‘Purple Beauty’ (Creeping Phlox)
Penstemon digitalis ‘Husker Red’
Baptisia australis (Blue False Indigo)
Rudbeckia fulgida (Black-eyed Susan)
Chelone lyonii ‘Hot Lips’ (Turtlehead)
Phlox paniculata ‘Jeana’
Aster laevis ‘Bluebird’
Panicum virgatum ‘Shenandoah’ (Switchgrass)
These species support pollinators, provide seasonal color, and are well suited to local rainfall patterns. Using native plants in Philadelphia landscapes also supports the region’s ecosystems—benefiting birds, bees, and butterflies while reducing the need for chemical fertilizers or pesticides.
Tips for Successful Fall Planting
Follow these simple steps for the best results when planting native shrubs and perennials in the fall:
Prep the soil: Loosen compacted areas and mix in organic matter if needed, especially if you encounter clay and new construction soils.
Plant at the right depth: Keep the root flares visible on trees and avoid covering the crowns of perennials.
Mulch lightly: A thin layer of mulch helps retain moisture and suppress weeds but should not touch plant stems. We prefer triple shredded bark mulch. It’s free of dyes, comes from trees harvested locally, and helps new plants establish while providing a clean and finished look.
Water well: Give your plants a deep soak when first installed. Monitor rainfall and supplement as needed. Fall plantings benefit from reduced water needs for new plants, as well as less stress from existing deciduous trees that drop their leaves.
Designing a Native Landscape That Lasts
At Union Landscape Design, we specialize in native plant landscaping across the Philadelphia and Main Line area. Whether you want a pollinator-friendly garden, a natural meadow-style yard, or a modern native landscape that fits your home’s architecture, fall is the perfect time to get started.
By planting now, your garden will wake up in spring already established, with stronger roots and more impact. While others are just beginning to plant, your landscape will be well on its way to a vibrant, sustainable ecosystem that looks beautiful year after year.
Ready to Plant?
If you’re ready to design and plant a native garden in the Philadelphia suburbs or along the Main Line, we’d love to help. Contact Union Landscape Design to schedule a consultation and make the most of this fall planting season.
— Union Landscape Design
