Discover Companion Planting with this Cucumber Trellis Cucumbers like it hot. Lettuce likes it cool and shady. But with this trellis, they’re perfect companions! Use this slanted trellis to grow your cucumbers and you’ll enjoy loads of straight, unblemished fruit. Plant lettuce, mesclun or spinach in the shady area beneath to protect it from wilting or bolting. Western red cedar frame and sturdy plastic mesh. 48" square.