A picture of a Lemon 'Eureka'

Lemon 'Eureka'

Citrus limon 'Eureka'

Full Sun
Easy care
Moderate watering


RHS hardiness


Minimum temperature

Expected size









  • spring
  • summer
  • autumn
  • winter

Lemon trees will fruit sporadically throughout the year with a primary crop in Summer-Autumn and a secondary crop in Spring. The correct time to harvest the fruit ​is when they turn yellow and feel heavy for their size.

More images of Lemon 'Eureka'

A photo of Lemon 'Eureka'
A photo of Lemon 'Eureka'

Lemon 'Eureka' Overview

'Eureka' lemon is one of the most common lemon trees around with very little thorns and a year-round crop. Highly acidic in taste and very juicy, the large and slightly oblong Eureka lemon variety is an integral part of the culinary world, used in a wide array of dishes and baked goods. With a yellow soft rind, fruit that is almost seedless and acidic, tangy taste it is easy to see why it is the most popular type kept in shops. Not only is this fruit such a big part of the culinary world, but it also has medicinal use and the juice has been used for many years as a cleaner.

Common problems with Lemon 'Eureka'

Aphids, false codling moth, leafminers, scale insects and woolly whitefly can be problematic. Look out for rot on fruit and mildew on leaves when wet.

Lemon 'Eureka' Companion Plants

These plants are all good companions which can be planted under and around a lemon tree. They will aid in deterring problematic pests and diseases.

How to propagate Lemon 'Eureka'


Germinate seed in a damp paper towel. Seed does not store well, therefore sow as soon as possible. Citrus seed does grow true from seed, meaning the pips will grow into the same kind of lemons!


Take stem cuttings from new green growth. Remove all but the top two leaves. Apply rooting hormone to the base of the cutting. Plant the cutting in a sterile growing medium or potting soil. Cut the two top leaves in half to limit water loss until new roots have grown.


Remove a ring of bark from a branch of new growth. Apply rooting hormone to the wound. Wrap moistened sphagnum moss around the treated area. Cover the moss with plastic wrap and tape securely.

Special features of Lemon 'Eureka'

Pot plant

It will grow and produce fruit quite willingly in a large pot which makes it ideal even for very small gardens and for sunny patios. If planted in a pot, make sure there are adequate drainage holes.

Attracts useful insects

Attracts insects such as bees.

Drought resistant

Once established, the lemon can survive hot, dry spells.

Hedge plant

Lemon trees make a beautiful green wall when regularly clipped.

Attractive fruits

Medium-sized, oblong, juicy fruit with a smooth, yellow peel throughout the year.

Attractive flowers

Clusters of sweet-scented, waxy blossoms.

Other uses of Lemon 'Eureka'


Lemon oil may be used in aromatherapy. It is used as an anti-bacterial, high in vitamins to prevent scurvy and in Indian traditional medicine.


The fruits pulp, rind and juice are used in the cooking and baking of various dishes, desserts and drinks.