Training Trumpet Vine and Wisteria on an Arbor: Fertilize with Slow-Release Osmocote

Trumpet vine twines readily once stems are long enough. Wisteria needs tying—train main stems along the arbor structure, prune laterals to 6 inches in summer, again in winter. Fertilize both with Osmocote 14-14-14 (or similar) scratched into the soil at the base in early spring. Water in. One application lasts 3–4 months. Avoid high nitrogen—it fuels foliage at the expense of flowers.