Spathiphyllum 'Sweet Sebastiano'

Botanical Origin and Horticultural History

Spathiphyllum is native as a genus to the tropical Americas, where its species grow in humid forest and waterside environments. Spathiphyllum ‘Sweet Sebastiano’ was developed in cultivation from this wider tropical American ancestry.

Petrus Olsthoorn bred the cultivar within a modern breeding programme.

Care for clumping aroid roots and foliage

Light: Place Spathiphyllum ‘Sweet Sebastiano’ in bright indirect light so its broad crown can sustain steady leaf and flower production. Shield nursery leaves from sudden hot sun.

Humidity and airflow: Humidity can assist expansion, but the full crown benefits most when air can move between petioles and leaves.

Roots and substrate: Use a moisture-retentive aroid substrate containing coarse material that preserves air spaces throughout the pot. A large specimen needs generous water during warm active growth, yet the lower centre of a deep container may stay wet after the surface changes colour.

Feeding: Cut declining stalks and foliage at the base, leaving the emerging central spears intact. Feed moderately while new leaves and inflorescences are being produced.

Declining Growth and Flowering

A large upright crown can hide a cool wet centre. If wilt persists while the mix at the bottom of the pot is moist, inspect for soft roots, a weakening crown or standing drainage water. Remove decayed material and improve airflow around the roots. If the entire root ball is light and roots remain firm, rehydrate it evenly instead.

Brown tips and margins may reflect mineral salts, hard water, repeated dry spells or damaged roots. Resolve the root or water-quality cause before trimming cosmetic damage. Long weak leaf stalks call for brighter indirect light rather than stronger feeding, while abrupt direct sun produces fixed bleached areas on the exposed leaves.

Thrips can scar emerging rolls and flowers; mite feeding creates pinprick fading under the leaves. A wet-looking patch that grows through healthy tissue calls for separation from the collection and dry foliage. One ageing outer leaf is ordinary, but rapid yellowing from several points or a soft central base is a root or crown warning.

Spathiphyllum ‘Sweet Sebastiano’ is toxic to pets

• Spathiphyllum ‘Sweet Sebastiano’ is toxic to cats and dogs.
• Chewing releases insoluble calcium oxalate crystals, which can cause immediate mouth pain, drooling and difficulty swallowing.
• Contact a veterinarian promptly after suspected chewing, especially if swelling or breathing problems occur.

Spathiphyllum: spathe leaf

Spathiphyllum arose from Greek spathē, meaning a blade or spathe, and phyllon, leaf.