Begonia Maculata 'Obsidian' — Rare Polka-Dot Begonia with Dark Foliage

Begonia ‘Obsidian Maculata’ — Rare Polka-Dot Begonia with Dark Foliage

Begonia ‘Obsidian Maculata’ is a dramatic, eye-catching cane-type begonia admired for its velvety, near-black foliage adorned with bright silver polka dots. The deep coloration of the leaves gives this begonia a luxurious, almost metallic sheen, while the contrast of its silvery markings makes each leaf look hand-painted. Undersides of the leaves reveal a rich burgundy hue, and when mature, the plant produces clusters of delicate white to pale pink flowers that dangle gracefully above its dark canopy.

Growth Habit

• Type: Cane (angel-wing) begonia.

• Mature Size: Typically 18–30 inches tall indoors; larger in greenhouse conditions.

• Foliage: Deep green to obsidian-black leaves with silver spots and burgundy undersides.

• Flowers: White to blush-pink clusters produced under bright, warm conditions.

• Growth Rate: Moderate; faster with warmth and humidity.

Care & Cultivation

• Light: Bright, indirect light helps maintain vivid leaf color and strong contrast in the silver spotting. Avoid direct sun, which can fade or scorch the leaves.

• Watering: Keep soil lightly moist but never soggy. Allow the top inch of soil to dry before watering again.

• Soil: A well-draining mix of peat, perlite, and bark is ideal to prevent root rot.

• Temperature & Humidity: Thrives in 65–80°F and moderate to high humidity. Avoid drafts or sudden temperature drops.

• Fertilization: Feed every 4–6 weeks during spring and summer with a balanced, diluted fertilizer.

• Pruning & Propagation: Prune to shape and encourage branching. Propagates easily from stem cuttings in water or soil.

Why It’s Special
Begonia Maculata 'Obsidian' stands out as a striking dark-leafed alternative to the classic Begonia maculata. Its velvety black leaves, shimmering silver dots, and crimson undersides give it an exotic, high-contrast look that elevates any houseplant collection. This cultivar bridges elegance and mystery — a must-have for begonia lovers and collectors of rare tropical foliage.

Our Growing Practices
Most of our plants are cultivated here in the USA, grown from cuttings or tissue culture. This ensures strong genetics, healthy plants, and a reliable source for collectors who want to add rare, tropical, and beautifully patterned begonias to their collection.