Growing Up Instead of Out

Left to sprawl, a cucumber or eggplant plant spends the season lying on bare soil or mulch, and everything about that arrangement works against you. Fruit rots where it touches damp ground, leaves lie in the dirt where fungal disease gets started, and harvesting means bending or kneeling to find fruit hidden under its own foliage.

What changes when the plant climbs instead

Our Medium Size Trellis (T008017) is built for exactly this group of crops. Cucumbers, peppers, and eggplants trained up it grow vertically instead of sprawling out, which keeps fruit and foliage off the ground and in better airflow. Airflow matters more than it sounds like it should. Damp, still leaf cover close to the soil is where mildew and rot get their start, and a plant lifted a few feet off the ground dries out between waterings the way a sprawling plant never does.

Harvest gets easier too, and not in a small way. Fruit hanging at chest height on a vertical trellis is fruit you can see, so less of it goes overripe or rots unnoticed the way it does when it is buried under a tangle of vines on the ground.

There is a practical reason 79 inches works well as a trellis height for these crops. Fruit trained up a frame that tall tends to set somewhere between waist and shoulder height for most adults, which is roughly the range you can see and reach without bending or crouching. Compare that to a sprawling eggplant, where the fruit sets wherever the branch happens to lean, often flat against the soil where it is easiest to miss until it has already gone soft.

Cucumbers in particular are prone to powdery mildew, a fungus that thrives in still, humid air near the ground. Training the vine upward does not remove the risk entirely, but it does put more of the leaf surface into moving air and out of the damp zone right at soil level, which is where an infection usually gets its start on a sprawling plant.

Sizing it right

The Medium Size Trellis (T008017) runs 95 by 16.75 by .375 inches, 79 inches once installed with 16 inches in the ground, at 9.88 pounds. That height suits cucumbers, peppers, and eggplants well without the extra width a tomato scale panel needs. If you want more surface for a heavier planting, add a Panel Kit (PK008109), four large panels at 90.5 by 30 by .375 inches, 22.88 pounds for the set, to build out a fuller vertical wall alongside the frames.

Some growers set two frames a few feet apart and lean them together at the top for an A frame shape over a cucumber bed, giving climbing vines a surface on both sides and making the row easier to walk down the middle of come harvest time. Either way, the crop is doing the same thing: reaching up instead of sprawling out, because there is something there to reach onto.

One change, several crops

The advantage of training peppers and eggplants the same way as cucumbers is that you are not building a different structure for each crop. The same trellis height and depth works across the group, so a bed planted with a mix of cucumbers, peppers, and eggplants can share one row of frames instead of three separate supports.

brenda S, gardening in Timonium, wrote that the system was "not only easy to install but works great," and that she had "the best yield ever" from her garden after using it. That is the outcome vertical growing is aiming for. Tidier rows are the visible part. More usable fruit at the end of the season is the part that matters.

If your cucumbers, peppers, or eggplants have spent the last few summers sprawling across the bed, the Medium Size Trellis is on the Products page along with sizing for the panels and kits that pair with it.