Begonia rex 'Hugh McLauchlan'

Begonia rex 'Hugh McLauchlan'

Begonia rex 'Hugh McLauchlan' is a colourful rhizomatous Rex Begonia with green-pink foliage and silver patterning. The leaves are asymmetric, lightly textured, and held on fleshy petioles that lift the patterned blades above a compact crown.

The plant grows from a creeping rhizome and forms a rounded mound with layered foliage above the pot. As new leaves expand, the colour balance can change with maturity, giving the crown a mix of fresh and older leaves.

Hugh McLauchlan colour and leaf shape

• Rhizomatous Rex Begonia with a compact to medium mounding habit
• Green-pink leaves with silver patterning
• Asymmetric foliage with a softly textured surface
• Fleshy petioles rising from a shallow rhizome
• Colour shifts as leaves mature

Rounded rex growth indoors

'Hugh McLauchlan' is part of the cultivated Rex Begonia group, which is linked to rhizomatous Begonia rex. The plant makes new leaves from the rhizome surface, so pot width, aeration, and careful watering matter more than deep root space.

In indoor culture, the plant stays most balanced with stable warmth, bright filtered light, and a substrate that drains quickly after watering. Small flowers may appear above the patterned crown.

Care for silver-patterned rex foliage

• Light: Bright filtered light gives the broad crown even growth. If petioles stretch or the centre opens, move the plant gradually into a brighter filtered position.
• Watering: Water when the upper 2 cm of substrate are lightly dry. Keep the root zone evenly moist during active growth and drain excess water fully.
• Substrate: Use a loose, breathable mix with fine bark, perlite, pumice, and a light organic base. The rhizome needs air around the surface.
• Humidity: Keep humidity around 50–70% with airflow. A humidifier or enclosed shelf reduces dry edges during leaf expansion in dry indoor months.
• Temperature: Maintain 18–26°C. Cool conditions slow growth, especially when the substrate stays damp.
• Feeding: Use diluted complete fertiliser while new leaves are forming, then reduce nutrition during the winter slowdown.
• Potting: Choose a shallow container with drainage. Increase pot size gradually as the rhizome reaches the edge.
• Grooming: Remove old or damaged leaves at the petiole base to keep airflow around the crown.
• Repotting: Refresh old substrate before it collapses into a dense mass. Keep the rhizome near the surface after repotting.
• Propagation: Warmth, humidity and clean cutting tools reduce losses from leaf sections or rhizome divisions.

Leaf and crown signals

• Brown or dry leaf edges: Check humidity, watering rhythm, heat, and fertiliser strength. Older lower leaves may also age naturally.
• Soft stems near the crown: Check for excess water, compacted substrate, and cool root conditions. Improve drainage and warmth.
• Patchy white coating: Powdery mildew can develop on rex foliage in still, humid air. Remove affected leaves and increase airflow.
• Fine stippling or dull leaf surface: Inspect the undersides for mites and isolate the plant during treatment.
• Sudden winter thinning: Lower light can slow leaf production. Keep the rhizome lightly moist and wait for fresh growth as conditions improve.

'Hugh McLauchlan' produces fresh patterned leaves from a shallow rhizome. Old petioles should be removed before they trap moisture around the crown.

Household safety for broad rex leaves

Place Begonia rex 'Hugh McLauchlan' out of reach of pets and children that chew plants. Rex Begonias contain soluble calcium oxalates that may cause irritation when eaten, especially from rhizome tissue. Rinse hands after handling broken leaves or exposed rhizome sections.

Hugh McLauchlan and rex naming

Begonia is a genus in Begoniaceae named in honour of Michel Bégon. Rex means “king” in Latin and anchors the cultivated Rex Begonia group. 'Hugh McLauchlan' is the cultivar name for this broad-leaved, silver-patterned selection.

Begonia rex 'Hugh McLauchlan' builds a layered crown of rounded leaves with metallic silver patterning and green-pink colour.