Description

Vitex agnus-castus ‘Alba’ is the elegant white-flowering form of the Mediterranean Chaste Tree, producing fragrant spikes of white flowers above attractive aromatic foliage. Naturally adapted to hot, dry Mediterranean conditions, it is an excellent low-maintenance shrub or small tree for Maltese gardens.

💧 Watering

Water regularly while young and establishing, allowing the upper soil to dry slightly between waterings. Once established, Vitex is highly drought-tolerant and generally requires little additional water. Occasional deep watering during Malta’s prolonged summer drought can support stronger growth and flowering, particularly for younger or container-grown plants.

☀️ Light

Grow in full sun for the healthiest growth and most abundant flowering, ideally with at least 6–8 hours of direct sunlight each day. Vitex handles Malta’s strong summer sunshine and heat exceptionally well once established.

🍃 Foliage / Growth

This vigorous deciduous shrub or small tree develops attractive palmate leaves made up of narrow grey-green leaflets. ‘Alba’ produces upright spikes of small white flowers during summer, followed by small rounded fruits. The foliage is aromatic when crushed. Prune during late winter to maintain the desired shape and encourage strong new flowering growth.

🪴 Potting Mix

Plant in well-draining soil. Vitex is adaptable and tolerates relatively poor, dry, and stony soils once established, making it particularly suitable for Mediterranean gardens. For container growing, use a quality potting mix amended with perlite, pumice, or coarse grit to ensure good drainage.

🌿 Fertilizer

Vitex has relatively low nutrient requirements. A light application of balanced, slow-release fertilizer or compost in spring is generally sufficient. Avoid excessive nitrogen, which can encourage vigorous foliage at the expense of flowering.

🐕🐈 Pet Safety

Reliable information regarding the safety of Vitex agnus-castus for cats and dogs is limited. Because the plant contains biologically active compounds, it is best to discourage pets from chewing or ingesting its leaves, flowers, or fruits.

🌬️ Air Purifying

Vitex agnus-castus ‘Alba’ is primarily valued as an outdoor ornamental rather than for specific air-purifying properties. Its nectar-rich flowers are highly attractive to bees, butterflies, and other pollinating insects, making it a valuable addition to a pollinator-friendly Mediterranean garden.