Tomato 'Long Portonian'

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Long Portonian is thought of as tender, so it is really important to plant out well after your last frost date. Ideally plant in loamy soil and try to keep the ph of your soil between the range of 5.5 and 7.5 as Long Portonian likes to be in weakly acidic soil to weakly alkaline soil.

Start seeds indoors six weeks before last frost date.

Sow at a depth of approx. 0.39 inches (1.0 cm) and aim for a distance of at least 0.78 inches (2.0 cm) between Tomato plants. Soil temperature should be kept higher than 12°C / 54°F to ensure good germination.

By our calculations, you should look at sowing Long Portonian about 42 days before your last frost date.

Plant to the first set of true leaves to promote strong root growth.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Long Portonian is a tender plant.

Original seed came from 1931 from a collection in England. Seed then collected by the University of Utah, and donated to the NPGS, USA in 1966.