Companion Plants for Hydrangea
A complete companion planting guide for Hydrangea, including what grows well nearby and what to avoid.
Plan a companion bed for Hydrangea
Use the interactive planner to drag Hydrangea and its companions onto a canvas, see spacing footprints, and catch conflicts before you plant.
Frequently Asked Questions
Can you plant Hydrangea in a raised bed with companions?
Yes — raised beds are ideal for companion planting because you control exact spacing and layout. Use the square-foot method to place Hydrangea alongside its best companions within the same bed.
How far apart should I plant Hydrangea and its companions?
Give Hydrangea its full 60" spacing. Plant compact companions like herbs 6–12" away at the bed edge, and taller companions (sunflowers, corn) where they won't shade the main crop. In raised beds, use the square-foot grid method for precise spacing.
Does companion planting actually work for Hydrangea?
Research supports several companion planting mechanisms: aromatic herbs like basil can reduce aphid populations near tomatoes; marigolds release thiophene compounds that deter nematodes; and flowers attract parasitic wasps that control caterpillars. Results vary by garden, but most gardeners see measurable pest reduction within one season.
Want the full Hydrangea growing guide?
Spacing, planting dates by ZIP code, seed saving tips, and more.