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How Many Blueberry Bushes Should I Plant? Two, Minimum

One bush fruits poorly; two different varieties cross-pollinate and yield far more. Here is the arithmetic by household, and the spacing that lasts.

By Zakaria 3 min read Save to Pinterest — opens Pinterest in a new tab
Blueberry bush berries
Photo: MrGajowy3, Pixabay Content License, via Pixabay
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Two, minimum, and they must be different varieties. One bush will fruit, badly. The step from one to two is the largest yield gain available anywhere in a fruit garden.

The arithmetic

Bushes against what you get, at maturity
BushesVarietiesMature yieldSuits
11Poor — reduced set, small berriesNobody, really
225–10 kgThe practical minimum
3–42–310–20 kgA family eating fresh
5–6312–30 kgFresh plus freezing
8+3+20–40 kgPreserving, sharing, selling

Two things that stretch the season further than adding bushes: choosing early, mid and late varieties, which spreads the harvest over six to eight weeks rather than concentrating it; and accepting that years one to three produce very little while the plants establish.

Two of the same variety is still one variety

This catches people out. Cross-pollination requires genetically different plants. Two ‘Bluecrop’ bushes are clones of each other, and pollen from one does nothing for the other that the plant could not do alone.

Buy two named varieties, and check their flowering periods overlap — which generally means staying within the same type.

Self-fertile, and what the label does not say

Most highbush blueberries are sold as self-fertile, and that is technically accurate: a lone plant will set some fruit.

What cross-pollination adds, consistently:

  • More berries set per truss
  • Larger individual berries
  • Earlier ripening
  • More reliable crops in a poor pollination year

Rabbiteye varieties, grown in warmer regions, are a stronger case still — they are poorly self-fertile and genuinely need a partner rather than merely benefiting from one.

Spacing, for the plant they become

  • Highbush: 1.2–1.8 m apart, rows 2.5–3 m
  • Half-high: 90 cm–1.2 m
  • Lowbush: 60 cm, as spreading ground cover
  • Rabbiteye: 1.8–2 m — they get large

A mature highbush reaches 1.5 to 2 metres in both directions. Planting at 60 cm because the nursery plants are small produces a dense hedge in five years: fine if a hedge is the goal, poor for airflow and awkward to pick.

The soil question decides the format

Blueberries need acidic soil, pH 4.5 to 5.5 — considerably more acidic than most gardens.

Test before buying anything. If your soil is near neutral or alkaline:

  • Containers are usually the better answer. 40–50 litres each, ericaceous compost
  • Amending a whole bed is possible with sulphur and ericaceous material, and it is an ongoing commitment rather than a one-off job
  • Raised beds filled with ericaceous mix are a middle route
  • Water with rainwater where the tap water is hard, since the lime in it steadily raises pH

And in containers, the two-variety requirement still applies — plan for two large pots, not one.

What to expect, year by year

  • Year 1–2: establishment. Remove flowers to direct energy into roots, hard as that is
  • Year 3: a modest crop
  • Year 4–5: building
  • Year 6 onward: full yield, 2.5–5 kg per highbush bush
  • Year 8+: prune out the oldest canes annually to keep production up

Blueberries are a long investment that pays for decades — mature bushes can be productive for thirty or forty years. The decisions worth taking time over are the ones made at planting: variety pairing, spacing, and soil pH.

Common questions

How many blueberry bushes do you need?

Two at an absolute minimum, and they should be different varieties of the same type. Most highbush blueberries are described as self-fertile, which is true in the narrow sense that a lone bush will set some fruit, but cross-pollination between two varieties reliably produces more berries, larger berries and earlier ripening. For a household that wants a real supply rather than a handful, three to six bushes across two or three varieties is the usual recommendation.

How much fruit does one blueberry bush produce?

A mature highbush blueberry yields roughly 2.5 to 5 kilograms a year once established, which takes about five to six years, with very little in the first two or three. That means four bushes can produce 10 to 20 kilograms at maturity, which is more than most families eat fresh and is why blueberries end up in freezers. Half-high and lowbush types yield considerably less per plant, and rabbiteye types in warm regions can exceed the figures above.

Do blueberries need two different varieties?

For a worthwhile crop, yes. They need to be different varieties, not simply two plants of the same one, since two identical plants are genetically the same and cross-pollination gains nothing. The varieties also need to flower at overlapping times, which generally means choosing within the same type — two highbush varieties, or two rabbiteye varieties — rather than mixing types whose bloom periods may not coincide. Rabbiteye blueberries in particular are poorly self-fertile and genuinely require a partner.

How far apart should blueberry bushes be planted?

1.2 to 1.8 metres apart for highbush varieties, with 2.5 to 3 metres between rows, and closer for half-high and lowbush types. Planting tighter produces a hedge, which some people want deliberately, at the cost of air circulation and easy picking. The spacing also assumes mature size, which people routinely underestimate — a mature highbush blueberry reaches 1.5 to 2 metres in both directions and takes several years to get there.

Can you grow blueberries in pots instead?

Yes, and in alkaline soil it is often the better option, since blueberries need acidic soil at pH 4.5 to 5.5 and amending a whole bed is a continuing battle. Use large containers of at least 40 to 50 litres with ericaceous compost, and you still need two different varieties, so plan for two large pots rather than one. Container plants need more watering and benefit from rainwater rather than tap water in hard water areas, where the lime gradually raises the pH.

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