Tomato 'King Humbert'

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that King Humbert is thought of as tender, so it is imperative to wait until temperatures are mild before planting out of doors. King Humbert requires a loamy soil with a ph of 5.5 - 7.5 - it grows best in weakly acidic soil to weakly alkaline soil.

Start seeds indoors six weeks before last frost date.

Ensure a distance of 0.78 inches (2.0 cm) between seeds when sowing - look to sow at a depth of approximately 0.39 inches (1.0 cm). Soil temperature should be kept higher than 12°C / 54°F to ensure good germination.

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 King Humbert is a tender plant.

Reportedly named for King Umberto I, King of Italy in the 19th century.

Described as early as 1885 in Vilmorin. ¹

Umberto, King Umberto, Rey Humberto, Re Humberto, Roi Humbert

¹ Tatiana’s TomatoBase