Pennsylvania sits in a unique spot climatically. We get real winters with hard freezes, hot and humid summers, and unpredictable spring weather that can swing from 70 degrees to a late frost in the same week. For homeowners in Warrington, Doylestown, and throughout Bucks County, this means plant selection matters enormously. The wrong plant in the wrong spot will struggle no matter how much you water, feed, or fuss over it. The right plant in the right spot practically takes care of itself.
Understanding Your Hardiness Zone
Most of Bucks County falls in USDA Hardiness Zone 7a, with some northern areas near Quakertown and Perkasie dipping into Zone 6b. This classification is based on average minimum winter temperatures, which for our area range from 0 to 10 degrees Fahrenheit.
When shopping for plants, check the tag for hardiness zone ratings. A plant rated for Zones 5-9 will be fine here. A plant rated for Zones 8-11 will likely die in its first winter. This seems obvious, but you would be surprised how many homeowners plant something they saw at a beach vacation home and wonder why it did not survive December.
Beyond the zone number, consider your property's microclimate. A south-facing bed against a stone wall is warmer than an exposed north-facing slope. Low spots collect cold air and frost. Areas near your home's foundation stay warmer than open lawn. These microclimates let you push zone boundaries in some spots while other areas of your property may be colder than the official zone suggests.
Best Trees for Bucks County Properties
Choosing the right trees is the most consequential landscaping decision you will make because trees are permanent. A poorly chosen tree becomes a problem you live with for decades.
For shade trees, red maples, white oaks, and sweetgums are native to Pennsylvania and handle our conditions perfectly. Ornamental options like Japanese maples, dogwoods, and redbuds add seasonal color and work well as understory trees or focal points. Avoid Bradford pears -- they are weak-wooded, split in storms, and have become invasive in our region. If you have existing problem trees, professional tree services can remove them safely.
For evergreen screening, eastern white pines grow fast and tall, while arborvitae provide a dense, narrow screen for property lines. Hollies offer year-round greenery and can be maintained as hedges with regular trimming.
Shrubs That Thrive in Pennsylvania
Shrubs form the backbone of most landscape designs, and choosing varieties suited to our climate saves you years of frustration.
For foundations and borders: Boxwood is the classic choice -- evergreen, dense, and easy to shape. Inkberry holly is a native alternative that handles wet soil better. Dwarf varieties of both work well in smaller spaces.
For flowering interest: Hydrangeas are the stars of Bucks County landscapes. Bigleaf hydrangeas (the blue or pink ones) do best in partial shade with consistent moisture. Panicle hydrangeas (like 'Limelight') are tougher and handle full sun. Viburnums offer spring flowers, fall berries, and require almost no maintenance. Knockout roses provide season-long blooms with excellent disease resistance.
For fall color: Burning bush and Virginia sweetspire deliver brilliant red and orange fall foliage. Winterberry holly drops its leaves to reveal bright red berries that last into winter.
Avoid: Butterfly bush has become invasive in Pennsylvania. Skip azaleas in full sun or dry, alkaline soil where they will struggle constantly. And if a plant tag says "Zone 8" without mentioning Zone 7, trust it -- it probably will not make it through a Bucks County winter.
Perennials for Year-Round Interest
A well-planned perennial garden in Chalfont or Newtown provides color from early spring through late fall when you select plants with staggered bloom times:
- Early spring: Hellebores, crocus, daffodils
- Late spring: Peonies, iris, bleeding heart
- Summer: Echinacea, black-eyed Susan, daylilies, lavender
- Late summer/fall: Asters, sedum, ornamental grasses, goldenrod
Native perennials are generally the most reliable performers because they have evolved to handle Pennsylvania's specific conditions. They also support local pollinators and require less water and fertilizer than exotic varieties. Mulching around perennials helps them through their first winter and conserves moisture during summer dry spells.
Dealing with Pennsylvania's Problem Soils
Much of Bucks County has clay-heavy soil that drains poorly in winter and bakes hard in summer. Before planting, it is worth understanding what you are working with.
For clay soil, amend planting holes with compost to improve drainage and root penetration. Choose plants that tolerate heavy soil -- many native species do well because they evolved in these conditions. Raised beds and berms are effective solutions for areas with persistent drainage issues, and french drains can redirect water away from beds that stay too wet.
Soil pH in our area tends to run slightly acidic to neutral (6.0-7.0), which suits most landscape plants. A soil test from Penn State Extension costs a few dollars and tells you exactly what amendments your specific property needs. It is the most underused tool in landscaping.
Professional Landscaping in Bucks County
Selecting plants is one thing. Designing a landscape that works as a cohesive whole -- with the right plants in the right spots, proper spacing for mature size, complementary bloom times, and year-round structure -- is where professional landscaping expertise pays for itself.
At Rish's Complete Lawn Care, we help homeowners across Warminster, Hilltown, Southampton, Richboro, and all of Bucks County create landscapes that look great and perform well in our specific climate. From seasonal cleanups to full landscape design and installation, we take the guesswork out of the process.
Frequently Asked Questions
What hardiness zone is Bucks County, PA?
Most of Bucks County falls in USDA Hardiness Zone 7a, with some northern areas in Zone 6b. This means minimum winter temperatures typically range from 0 to 10 degrees Fahrenheit. Choose plants rated for at least Zone 7a (or Zone 6b for extra cold hardiness) to ensure they survive Pennsylvania winters.
What are the best low-maintenance shrubs for Pennsylvania?
Boxwood, inkberry holly, and dwarf fountain grass are excellent low-maintenance options for Pennsylvania landscapes. They handle the climate well, require minimal pruning, and look good year-round. For flowering shrubs, hydrangeas, viburnums, and knockout roses are reliable choices that thrive with little attention beyond occasional trimming.
When should I plant shrubs and perennials in Pennsylvania?
Fall (September through mid-October) is the best time to plant most shrubs and perennials in Pennsylvania. Soil is still warm enough for root growth, cooler air reduces transplant stress, and fall rainfall helps with establishment. Spring planting (April-May) works well too, but plants have less time to root in before summer heat arrives.