Keep in mind when planting that Lemon Lime is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Ensure your soil has a ph of between 6.1 and 7.5 as Lemon Lime is a weakly acidic soil - weakly alkaline soil loving plant.
By our calculations, you should look at sowing Lemon Lime about 49 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Lemon Lime is a tender plant.