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What are the best trees to plant in the Lehigh Valley, PA?
Some of the most popular and well-performing trees for the Lehigh Valley region include Red Maple (Acer rubrum), Eastern Redbud (Cercis canadensis), Serviceberry (Amelanchier spp.), River Birch (Betula nigra), and Flowering Dogwood (Cornus florida). These trees are well-suited to Pennsylvania’s climate, handle our cold winters and humid summers, and offer beautiful seasonal interest. Our nursery staff can help you choose the right tree based on your yard’s sun exposure, soil type, and available space.
When is the best time to plant a tree in Pennsylvania?
The ideal times to plant trees in Pennsylvania are spring (April–May) and fall (September–October). Fall planting is especially beneficial because cooler temperatures reduce transplant stress while the soil is still warm enough to encourage root development before the ground freezes. Spring planting works well too, giving trees a full growing season to establish. Avoid planting during the hottest weeks of summer or when the ground is frozen in winter.
How much water does a newly planted tree need?
Newly planted trees need consistent watering during their first one to three years while they establish their root systems. As a general rule, water deeply two to three times per week during the first growing season, providing about 10 gallons per inch of trunk diameter each time. In the Lehigh Valley, hot and dry summer stretches can put extra stress on young trees, so monitor the soil moisture regularly. A 2–4 inch layer of mulch around the base (kept away from the trunk) will help retain moisture and regulate soil temperature.
How do I know what size tree to buy?
Tree sizing depends on your goals and budget. Smaller trees (1–2 inch caliper) are more affordable, easier to plant, and often establish faster than larger specimens. Larger trees (2.5 inch caliper and above) provide immediate visual impact and shade but require more careful planting and aftercare. For most homeowners in the Lehigh Valley, a 1.5–2 inch caliper tree strikes the best balance between value and results. Our team can walk you through the options available at our nursery and recommend the right fit for your landscape.
Do I need to fertilize a newly planted tree?
It’s generally best to avoid heavy fertilization at planting time, as it can burn young roots and push leafy growth before the root system is established. Instead, focus on proper planting depth, good watering habits, and mulching for the first year. After the first growing season, a slow-release, balanced fertilizer applied in early spring can support healthy growth. A soil test is always a smart first step — Penn State Extension offers soil testing for Pennsylvania residents and can tell you exactly what your soil needs.
How far should I plant a tree from my house or utilities?
As a rule of thumb, small trees (under 25 feet tall at maturity) should be planted at least 10 feet from your home. Medium trees (25–50 feet) need at least 15–20 feet of clearance, and large trees (over 50 feet) should be planted 30 or more feet away. Always check for underground utility lines before digging — Pennsylvania’s PA One Call system (dial 811) will mark buried lines for free. Our staff can help you select trees with root systems and mature heights that are appropriate for your specific planting location.
What trees offer the best fall color in the Lehigh Valley?
The Lehigh Valley puts on a spectacular fall show, and several trees are standouts for autumn color. Sugar Maple (Acer saccharum) delivers brilliant oranges and reds; Sweetgum (Liquidambar styraciflua) offers a mix of yellow, orange, and purple; Ginkgo (Ginkgo biloba) turns a stunning golden yellow; and Black Gum (Nyssa sylvatica) is one of the earliest and most vivid fall trees in our region. If fall color is a priority for your landscape, stop by Herbein’s and we’ll help you find the perfect tree for your yard.