- Common Name: Lilac chaste tree, Chaste Tree, Monk’s Pepper, Texas Lilac
- Botanical Name: Vitex agnus‑castus
- Family Name: Mint family
- Type: perennial
- Zone Hardiness: 7–8
- Height: 10–15ft
- Width: 10–20ft
- Blooms: Showy, fragrant flower spikes, lavender‑blue.
- Bloom Time: Late spring to mid‑summer
- Sun: Full sun preferred; tolerates light shade
- Leaves: Deciduous, palmately compound leaves with 5–7 lanceolate leaflets, aromatic, gray-green
- Maintenance: moderate for the casual gardener; prune in early spring for structure or size control
- Tolerates: Drought, Alkaline and acid soils, well-drained, Moderate salt air exposure, deer
- Attracts: Bees, butterflies, other pollinators, deer
- Texas Superstar: Yes
- Texas Native: No
- Invasive: Yes, in areas with limestone or dry creek beds