Tomato + Borage

Borage and tomato are compatible in most home garden settings. Both prefer full sun and tolerate the same range of well-drained, moderately fertile soils, so they can share bed space without competing sharply for nutrients. Borage is typically direct-seeded or transplanted at the same time as tomato starts go in the ground, after last frost.

The practical case for the pairing centers on insect activity. Borage flowers continuously through the season and draws bees and parasitic wasps that also work neighboring tomato flowers. It is commonly cited as a deterrent to tomato hornworm, though the evidence is largely observational rather than replicated trial data; treat it as a plausible benefit rather than a guarantee.

Plant borage at the end of rows or in gaps between plants rather than interplanted closely. Borage grows large (18 to 24 inches wide) and can shade shorter tomato suckers if positioned carelessly. The pairing is most useful in gardens where pollination is inconsistent or hornworm pressure has been a recurring problem.