Wholesale citrus

Improved Meyer lemon

Citrus × meyeri ‘Improved Meyer’

Also known as Meyer lemon · Improved Meyer

A lemon crossed with a mandarin: sweeter, thinner-skinned and juicier than a true lemon, on a compact tree that takes cold better than any other lemon. The virus-free selection every nursery sells now.

EdibleLemon hybridCompactCold hardy for a lemon

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Landscape layersLower canopy

Mature size

Usually 10–20 ft tall and wide; rootstock and pruning change final size

Climate fit

Urban core · USDA 9b–10a · Valley suburbs · USDA 9a–9b · Desert outskirts · USDA 8b–9b

Special categories

EDIBLE

Winter chill

None

Typical harvest

Mainly November through March, with smaller flushes through the year

Before you plant

These conditions determine whether it will thrive.

Required microclimate

Placement is part of the growing system.

Zone A — morning sun, afternoon shade, at the east end of the sunnier south-facing side. Shields thin skin and variegated foliage from west sun, and gives blood oranges the cooler afternoons they need to color.

Cold hardiness

Cover while young

Much hardier than true lemons. The tree handles about 22°F, about as hardy as a sweet orange. Cover it its first two or three winters, and protect ripening fruit when a night below 28°F is forecast.

Leaves and wood: damaged below 22°F · Blossoms and fruit: below 28°F

Heat tolerance

Shade from late-afternoon sun

About as heat-tolerant as a sweet orange. In Phoenix it does best with morning sun and afternoon shade, which also protects its soft, juicy fruit.

Sources:

ucanr.edu , citrusvariety.ucr.edu , escholarship.org

Right plant, right place

Will Improved Meyer lemon grow at your Arizona property?

Plant in fast-draining soil with the graft union above grade. Keep mulch away from the trunk and avoid lawn irrigation at the root crown.

Best regional fit: Urban core · USDA 9b–10a, Valley suburbs · USDA 9a–9b, Desert outskirts · USDA 8b–9b.

Light

Sun exposure

Full sun; young trunks and exposed scaffold limbs need sunburn protection

Water

Irrigation

Deep, regular irrigation with drying between cycles; expand the wetted zone as the canopy grows

Fruit set

Pollination

Self-fruitful

Harvest

How to use it

Juice, zest, desserts, and eating with the peel in salads

Planting & stewardship

How to help Improved Meyer lemon thrive

1
Verify both the named cultivar and rootstock on the nursery tag before planting.
2
Whitewash newly exposed bark and protect cold-sensitive trees during hard freezes.
3
Feed in several light applications during the active season rather than one heavy dose.
4
Let fruit color and flavor—not a calendar date alone—confirm harvest readiness.

Read the horticultural reference ↗