What Are the Best Companion Plants for Blueberries?
Blueberries grow best with borage, sweet alyssum and strawberries. 3 plants in our chart pair well with blueberries, mostly by attracting pollinators and beneficial insects and using space and time efficiently; 2 of those pairings are research-supported.
| Plant | Why | Evidence |
|---|---|---|
| BoragePollinators & beneficials | Blueberry flowers are pollinated mainly by bees, and borage planted just outside the acidic bed helps keep them nearby. | Research-supported |
| Sweet AlyssumPollinators & beneficials | Sweet alyssum at the bed edge feeds hoverflies and parasitic wasps that control aphids on blueberries. | Research-supported |
| StrawberriesSpace & timing | Strawberries tolerate mildly acidic soil and can serve as a ground cover along the edge of a blueberry bed. | Traditional |
Good companion plants for blueberries, strongest evidence first.
What Should You Not Plant With Blueberries?
Don't plant blueberries near lavender, rosemary, thyme and black walnut. The conflicts come mainly from conflicting soil or water needs and allelopathy (plant chemicals that suppress growth); none of the 4 are research-supported and the rest are practical or traditional rules.
| Plant | Why | Evidence |
|---|---|---|
| LavenderConflicting needs | Blueberries need acidic, moist soil around pH 4.5 to 5.5; lavender needs dry, neutral to alkaline soil. | Practical |
| RosemaryConflicting needs | Rosemary wants dry, neutral soil and suffers in the acidic, moist conditions blueberries need. | Practical |
| ThymeConflicting needs | Thyme prefers lean, dry, neutral soil; acidified, mulched blueberry beds stay too wet and sour for it. | Practical |
| Black WalnutAllelopathy | Black walnut roots release juglone, and blueberries are commonly reported to wilt and decline within the tree's root zone. | Traditional |
Plants to keep away from blueberries.
Which Blueberry Companion Claims Are Backed by Research?
2 of the 7 blueberry pairings in our data are research-supported: borage and sweet alyssum. Of the rest, 3 rest on practical horticulture and 2 are traditional claims.
Research-supported pairings rest on documented biology: shared pathogens, pollination, nematode suppression or insects that feed on specific flowers. Practical pairings are plain logic about space, shade and timing. Traditional companions such as strawberries are harmless to grow with blueberries, but don't rely on them for pest control — row covers, crop rotation and regular checks do more.
How Should You Plant Blueberries With Companions?
Plant blueberries 4 to 6 feet (1.2–1.8 m) apart in acidic soil mulched with pine bark or needles. Edge the bed with strawberries and put borage and sweet alyssum just outside the acidified zone.
Companions still need room of their own, so work out how many blueberries and partner plants fit in a bed with the plant spacing calculator. Blueberries are perennial, so check winter survival in your USDA hardiness zone by ZIP code before choosing a permanent spot for them and their companions.
Watering, feeding, light and harvest timing for blueberries are covered in the blueberry bush care guide.
Which Crops Share Companions With Blueberries?
Strawberries, borage and lavender share companion plants or growing conditions with blueberries, so their companion guides help plan the same bed or rotation.
- The guide to companion plants for strawberries overlaps with this one: both crops grow well with borage and sweet alyssum, and strawberries are a good companion for blueberries too.
- The guide to companion plants for borage overlaps with this one: both crops grow well with strawberries, and borage is a good companion for blueberries too.
- The guide to companion plants for lavender covers a crop grown in similar conditions, but lavender and blueberries should grow in separate beds.
To check blueberries against every other plant at once, or test a whole bed plan, use the companion planting chart and garden checker.
Frequently Asked Questions
- What is the best companion plant for blueberries?
- Borage is one of the best-supported companions for blueberries. Blueberry flowers are pollinated mainly by bees, and borage planted just outside the acidic bed helps keep them nearby.
- What should you not plant with blueberries?
- Avoid planting blueberries near lavender, rosemary, thyme and black walnut. The most important conflict is with lavender: Blueberries need acidic, moist soil around pH 4.5 to 5.5; lavender needs dry, neutral to alkaline soil.
- Can you plant blueberries and strawberries together?
- Yes, blueberries and strawberries are good companions. Strawberries tolerate mildly acidic soil and can serve as a ground cover along the edge of a blueberry bed.
- Does companion planting really work for blueberries?
- Partly. 2 of the 7 blueberry pairings in our data are backed by research, 3 are practical space or timing rules, and 2 are traditional. Flowers that feed beneficial insects and separating crops that share diseases have the strongest evidence.
Companion data: PlantoScan's own editorial compilation, written from general horticultural knowledge, plant pathology and published intercropping research. Evidence labels are our editorial judgment; results vary with climate, soil, variety and pest pressure.