Mountain mint

Pycnanthemum speciesLamiaceaeHerbaceous perennial

A North American mint-family perennial that repeatedly comes out at or near the top of pollinator-observation trials — it attracts a wider range of insect species than almost any other plant tested. Its flowers are tiny, its nectar is generous, and it flowers for weeks.

Value to bees

Nectar
High
Pollen
Moderate
As a honey crop
Feeds the colony but rarely yields a surplus
Which bees, and why
The flowers are so small and so shallow that nothing is excluded — tiny sweat bees, wasps, flies, beetles and butterflies work it alongside honey bees, which is exactly why its species counts are so high.
Worth knowing
Repeatedly recorded as attracting more pollinator species than any other plant in comparative garden trials, and a genuinely outstanding choice for insect diversity rather than for honey volume.

Flowering

In flower
July to September (northern hemisphere)

A long midsummer-to-autumn flowering that covers the American late-summer gap.

When nectar flows
Generous and continuously renewed across a very large number of tiny flowers, which is why the insect counts on it are so high.

What it does to the honey

Rarely yields a surplus on its own. Its contribution to a mixed summer honey is a light minty herbal lift.

Growing it

Conditions
Full sun to light shade on average to moist soil. Undemanding.
Size
0.6-1.2 m.
Native range
Eastern and central North America, in meadows, prairie edges and open woodland.
Suits
Small gardens, Large gardens, Meadow or wildflower area
  • Spreads by rhizome, more politely than true mints but not indefinitely politely.
  • If a border can hold one plant chosen purely for the number of insect species it supports, this is a strong candidate.

What it looks like

Upright square stems with narrow aromatic leaves, the uppermost dusted silvery white, and flat-topped clusters of very small white flowers spotted with purple.

Sources

  • HoneyHQ editorial synthesisHEKNO Ltd · HoneyHQ synthesis

How sources are selected and weighted is set out in the sources and evidence policy.

Guides covering this plant

Tools for planning planting

HoneyHQ saves your cookie choice on this device. Optional analytics run only if you accept — set a preference now, or change it later on the cookies page.