These DIY Pea Trellis Ideas are functional and easy to make and can improve the productivity of your peas.. Whether you plant peas on the ground or in containers, they need support to grow You can use stakes and trellises or repurpose spare tomato cages for this purpose. 12 Functional DIY Pea Trellis Ideas - Please note: You are currently browsing img 10 diy trellis ideas for you garden that is 1590x768px in size. This image is listed in diy garden trellis ideas category. 12 Functional DIY Pea Trellis Ideas, 1590x768 in 641.40 KB.