Needs ericaceous compost, and feeding with Potash from May to September.
Eureka likes a position of full sun and remember to water moderately. Keep in mind when planting that Eureka is thought of as half hardy, so it will need cloching or fleece protection when the temperature dips. Ensure your soil is potting mix and has a ph of between 6.1 and 7.5 as Lemon is a weakly acidic soil to weakly alkaline soil loving plant.This lemon is ready for harvest when it turns a pale yellow color.3
Originated from Arabic and Persian limun through Old Italian and Old French limone.1
Lemon
2 Nassau County Extention Flordia
3 http://homeguides.sfgate.com/raise-eureka-lemon-tree-42566.html