The honeyberry.

Laidback Gardener – Welcome to Larry Hodgson’s world:
"The honeyberry mature very early: in May in warmer climates, June in colder ones.
That’s still well before any other northern fruit.
The plant flowers very early in the season too: in April or May, again depending on the climate.
Since early blooming is associated with a risk of frost, you’d normally be concerned about cold damage, but remember that this plant comes from a boreal climate and can cope with cold.
As a result, the flowers can handle temperatures down to 19°F (-7°C) even when in full bloom and thus readily resist spring frosts.

The plant begins to produce fruit starting in its second year and can continue to produce for 30 years and more.

Unlike blueberries, which have an absolute need for acid soils, haskaps are tolerant of both acid soils and alkaline ones (pH 4.5 to 8).
You need two different varieties to ensure pollination.
The haskap also prefers a relatively cool summer. "

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