Think Twice: 9 Plants to Avoid at Big-Box Stores for Your Garden’s Sake

Many gardeners know the allure of big-box stores, where colorful plants beckon from neatly arranged aisles. However, while these establishments offer convenience and competitive pricing, not all plants are created equal. Some may lead to regret shortly after you bring them home. To help you make smarter gardening choices, here’s a list of nine plants you should think twice about buying from big-box stores.

1. Knockout Roses

While Knockout roses are marketed as low-maintenance and disease-resistant, they often fail to thrive in diverse garden conditions. These roses can suffer from black spot and other diseases if not cared for properly. Instead, consider native roses or heirloom varieties that are better suited to your local climate and soil conditions.

2. Gardenia

Gardenias are a popular choice for their fragrant blooms, but they can be finicky in terms of care. They require high humidity, acidic soil, and specific sunlight conditions to thrive. If you don’t live in a humid area or are in a USDA zone that experiences cold winters, think about opting for more resilient flowering shrubs, like hydrangeas or lilacs, that can tolerate a range of conditions.

3. Impatiens

While impatiens are a go-to for shady spots, they have been increasingly susceptible to downy mildew, a fungal disease that can decimate your garden. If you’re looking for colorful shade plants, try alternatives such as New Guinea impatiens or coleus, which are more resistant to diseases and pests.

4. Japanese Maple

Japanese maples are stunning and can be a centerpiece in any garden. However, they are often sold at big-box stores without proper care and attention to their specific needs. Many gardeners don’t realize that these trees prefer well-draining soil and protection from harsh afternoon sun. Instead of a young tree from a store, consider sourcing a more mature specimen from a local nursery that specializes in trees.

5. Pansies

Pansies are cheerful spring flowers, but they can be short-lived if planted too late in the season. They thrive in cooler temperatures, and planting them during a warm spell can lead to wilting and poor performance. If you’re in a warmer climate, look for heat-tolerant alternatives like portulaca or zinnias that can withstand the summer sun.

6. Common Juniper

Common junipers are often touted as low-maintenance evergreens, but they can become overly invasive and difficult to manage. These plants can outcompete native species and disrupt local ecosystems. Instead, consider using native evergreens, such as eastern red cedar, which provide beauty and support local wildlife.

7. Petunias

Petunias are a popular choice for container gardens, but they can be prone to pests and diseases, particularly when grown in high humidity. Additionally, many of the varieties sold at big-box stores can be hybrids that lack the hardiness of heirloom varieties. Instead, try growing marigolds or geraniums, which generally have a stronger resistance to pests and can bloom all season long.

8. Butterfly Bush

The butterfly bush may attract pollinators, but it is also considered invasive in many areas across North America. It can quickly spread and outcompete native plants, causing a decline in local biodiversity. Instead, opt for native flowering plants like coneflowers or aster that provide similar benefits to wildlife without the ecological concerns.

9. Annual Vinca (Periwinkle)

While annual vinca is often praised for its heat tolerance and ability to thrive in poor soil conditions, it can be problematic in some regions. This plant can spread aggressively and may not be suitable for gardeners looking for manageable ground cover. Consider using native ground covers such as creeping thyme or wild strawberry that provide similar coverage without the invasiveness.

Tips for Shopping Smart

When shopping for plants, here are some helpful tips to avoid regret:
Research First: Before heading to the store, do your homework on the plants that suit your climate, soil type, and garden conditions. Knowing what thrives in your USDA zone will save you time and money.
Inspect Health: Always examine plants for signs of disease or pests. Look for yellowing leaves, wilting, or any sticky residue that could indicate aphids or other issues. Healthy plants will have vibrant colors and firm leaves.
Ask Questions: Don’t hesitate to ask store staff about the plants you’re interested in. They may provide valuable insights into care requirements and potential issues.
Choose Local Nurseries: Whenever possible, support local nurseries that specialize in plants suited to your area. They often carry varieties that are well-adapted to local conditions and can provide you with personal care tips.
Plan for the Future: Consider your long-term gardening goals. If a plant requires special care or is prone to issues, think about how it fits into your overall garden plan. You want plants that will thrive and contribute positively to your garden’s ecosystem.

By being mindful of your choices and avoiding these common pitfalls, you’ll create a thriving garden that brings you joy and satisfaction for years to come. Happy gardening!