Begonia ‘Jolly Silver’ (Rex Cultorum Group)

Care for rhizomatous foliage growth

Watering

Check moisture in the root zone directly: water Begonia ‘Jolly Silver’ (Rex Cultorum Group) when the upper layer of the substrate has dried and the lower shallow root zone still holds a trace of moisture. Repeated complete drying weakens the feeder roots even when the thick rhizome still looks firm.

Light

Begonia ‘Jolly Silver’ (Rex Cultorum Group) grows most evenly at an east window. Expect the silver patches and red leaf undersides on healthy growth.

Temperature

Do not let leaves touch a winter pane or place the root ball in the path of an open-door draught.

Humidity and airflow

Watch how the new leaves of Begonia ‘Jolly Silver’ (Rex Cultorum Group) open. Average household humidity is workable, while a steady moderate to high humidity usually gives smoother new leaves and fewer dry edges.

Repotting

Move Begonia ‘Jolly Silver’ (Rex Cultorum Group) into fresh substrate when the rhizome reaches or circles the rim, roots fill the shallow pot, watering becomes uneven or the mix loses its open structure. Set the plant at the same depth, with clear surface space in front of its active rhizome tip.

Root care

Keep the rhizome of Begonia ‘Jolly Silver’ (Rex Cultorum Group) visible and guide its growing end around the pot rim and leave the soft petioles unstaked. Hold the red-backed leaves of Begonia ‘Jolly Silver’ at the petiole when cleaning.

Begonia ‘Jolly Silver’ (Rex Cultorum Group): what the symptoms mean

Long silver leaves droop from the petiole

Jolly Silver’s slender blades naturally arch more than a round rex leaf. A firm stalk and steady growth usually mean the low posture is normal. If every leaf becomes limp, check if the root ball is light and dry or heavy and airless before changing the moisture level.

Silver blades look greener with age

The silver overlay sits over deep green and can become less dominant as a leaf matures or the viewing angle changes. Leave firm foliage in place. Bleached papery areas, loss of sheen with stippling or smaller new leaves are separate changes that deserve investigation.

Burgundy undersides look almost black

The hidden burgundy colouring is a normal contrast beneath the silver blade. It should be evenly coloured and dry. A local dark area that is translucent, soft or spreading through the petiole is damage and should be removed before it reaches neighbouring growth.

Narrow blades crease along their length

The long leaves can fold during unpacking or when the pot is moved. A dry crease is physical damage; give later leaves room to extend and keep the marked leaf if most of it still functions. Remove it if the crease turns wet or grey.

Begonia ‘Jolly Silver’ is toxic to people and pets

• Keep this plant away from children, cats and dogs.
• The roots and rhizomes contain the highest levels of soluble oxalates, and the sap can irritate skin.
• Chewing may cause mouth irritation, drooling, vomiting or stomach pain. Contact a veterinarian or medical professional if symptoms develop.

What does the name Begonia mean?

Begonia honours Michel Bégon.

Carl Linnaeus established the genus Begonia in 1753 in Species Plantarum, page 1056.