A compact planter with a built-in trellis for less than $30? It’s exactly the kind of middle aisle find that has gardeners queuing round the block. But is it too good to be true? Lidl’s new Parkside planter box ticks every… well, box at first glance: a neat footprint, attractive natural wood, and a ready-made support for climbing plants that can elevate any patio or even a balcony garden.

But, before you load up your cart, there’s one important detail worth paying attention to – and it will make or break your planting plans. So, what’s the catch? With a 5-gallon capacity, it’s a bit on the small side for many vigorous climbing plants. So, while it’s perfect if your planter box ideas consist of a couple of pea plants or annual vining flowers, if you’re envisioning a row of sprawling tomatoes, then it’s not the best option.

So, how do you decide if Lidl’s latest bargain buy is right for you? First, you need to think about what plants you actually want to grow in it. And, if it’s too small, don’t worry, as we have picked out some great-value trellised planters with plenty of room for plants to spread out.

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Why it Might Be Too Small

Climbers aren’t just about what you see above the soil. To really perform – producing strong stems, lush foliage, and flowers, they need a decent root run. So, in a shallow planter, certain crops and ornamentals are quickly gong to hit their limits, which shows up as:

• Slower growth and thinner stems
• Fewer flowers and fruit
• Increased watering and fertilizing needs
• Plants quick to dry out in warm weather

So, What Can You Grow in It?

Just because Lid’s Parkside planter box is small doesn’t mean it’s not worth buying - it’s a great option for renters and anyone short of space. You just need to match the plant to the container. This planter works best with lighter, less demanding climbers, such as:

• Sweet peas
• Black-eyed Susan vine
• Nasturtiums trained upwards
• Compact annual climbers
• Smaller pea and pole bean plants

You can also think slightly differently and use the trellis as a support rather than a full climbing system. For example, you could tie in dwarf tomatoes, peppers, or even trailing strawberries to lift them slightly off the soil. Alternatively, have one medium-sized climber as a statement plant, then surround the edges with herbs or low-growing flowers.

When to Size Up

If your goal is a proper vertical feature – think a full screen of foliage or a long-flowering climber like clematis – you’ll want something closer to:

• 10-15 gallon minimum capacity for most perennial climbers or little row of tomatoes
• Greater depth for moisture retention and root stability
• A sturdier support that can handle weight over time

In other words, this Lidl buy is best treated as a starter trellis planter, not a long-term home for heavy hitters.

Planter Boxes With Room to Grow

At $29.99, Lidl’s trellised planter is undeniably good value and a smart pick for small-space gardening. Just don’t let the trellis fool you into overplanting.

Used well, it’s perfect for quick seasonal color and light climbers. But expect to support a lush row of heavy climbers? You’ll find it to be undersized. If you go in with the right expectations and the right plants, however, it’s a garden steal.