Companion Planting Chart Printable, 36 Vegetables Herbs & Flowers, Good and Bad Neighbors with Reasons, Garden Poster 18x24 A2 Letter A4

Who grows well together, who should keep apart, and why. An honest companion planting chart for 36 vegetables, herbs and flowers, pretty enough to hang in the shed.

Most companion charts treat every tip as fact. Most tips are tradition, and that is fine, as long as you know which is which. This one tells you which pairings are backed by research and which are garden tradition, and gives the reason for every mark.

WHAT'S ON THE CHART
Page 1: the matrix. Find one crop on the left and the other across the top. A circle means good neighbors, a diamond means keep apart. The letter inside is the reason. A solid mark means research-backed, an outline means garden tradition.
Page 2: one row per crop, with up to four good neighbors and three to keep apart, each with its reason, plus growing notes for some crops (like "grow mint in a pot").

THE FIVE REASONS
P Pests: a neighbor deters or traps pests, or two crops share the same pests
D Disease: two crops share a disease, like tomato and potato with late blight
S Support and shade: corn holds up pole beans, squash leaves shade the soil, or sprawling vines crowd a neighbor
B Beneficial insects: flowers that feed pollinators and aphid-eaters
A Allelopathy: a plant that may chemically slow its neighbors (mostly untested, so marked as tradition)

ALSO ON THE CHART
- 3 pairings science backs (onions vs carrot fly, the Three Sisters, marigolds vs whitefly)
- 3 popular myths, busted (basil and tomato flavor, marigolds vs nematodes, dill and carrots "cross-pollinating")

36 CROPS
Tomato, bell pepper, eggplant, potato, sweet potato, cucumber, zucchini, winter squash, melon, corn, bush bean, pole bean, pea, carrot, beet, radish, onion, garlic, leek, lettuce, spinach, kale, cabbage, broccoli, Swiss chard, strawberry, basil, dill, cilantro, parsley, rosemary, thyme, mint, marigold, nasturtium, borage.

WHAT YOU GET (instant download, vector PDFs)
- US Letter and A4: 2 pages each, color
- Ink-saver: Letter and A4 in black and white
- US poster sizes: 8x10, 11x14, 18x24, 24x36 inches
- ISO poster sizes: A2 and A1
Every size has both pages. Vector files stay crisp at any size: print at home or at a copy shop, and frame it.

GOOD TO KNOW
Ratings come from university extension services and peer-reviewed studies. Companion planting effects are usually modest, and gardens vary: use the chart as a starting point and watch your own beds.

This is a digital download. Nothing will be shipped. Frame not included. If anything doesn't work for you, message us and we'll fix it.

Designed by Sagestead with digital illustration and AI-assisted tools. Every pairing checked by hand against published sources.
© Sagestead. Personal use only.