Lemon Squash Trellis . The vines can grow around 8 ft long. Lemon squash (summer) and north georgia candy roaster (winter). PlantFiles Pictures Zucchini, Courgette, Summer Squash 'Lemon from davesgarden.com When transplanting squash seeds, thin them to two or three healthy plants per hill. Gently weave the shoots through the trellis and secure them with some string or soft plant ties. Feb 24, 2022 • 5 min read.