Verbena

Meet verbena, the flower that arrives as a tight, many-coloured posy and keeps flowering for months. Each three-inch cluster is made of many small star-shaped flowers in pink, red, purple, white and bicolours, and NC State says garden verbenas bloom all season if the flowers are deadheaded.

It suits the way Dubai people garden: pots by the door, hanging baskets and window boxes, where a trailing or mounding verbena fills out fast. A Dubai home-garden guide lists verbena among the annuals that do well from late October through winter, together with petunia, pansy, marigold, salvia and snapdragon.

It also rewards a little shopping care. Clemson Extension says bedding verbenas raised from seed do not do well in hot, humid climates, while the vegetatively propagated types are well adapted to heat, and NC State names the Lascar and Tuscany series as heat tolerant. Which one is in your tray is what decides how long the show lasts.

Verbena × hybrida, the garden verbena, is a hybrid group grown as an annual. RHS gives a semi-evergreen perennial of about 30 cm, usually cultivated as an annual for bedding, hanging baskets and containers, and NC State says the plants can be mounding, trailing or upright. Kew's checklist (WCVP, behind POWO) treats the garden verbena as Glandularia × hybrida, and RHS lists it under both names, which is why labels vary.

On timing, no Dubai Municipality or nursery source we found gives a verbena-specific window. A Dubai home-garden guide lists verbena with the annuals that do well from late October through winter, in beds with at least half a day of sun, and says to expect them to fade as the heat arrives in April or May. That fits Dubai's cool season, when mean highs fall from 30.7 °C in November to 24.4 °C in January and climb back to 33.7 °C in April.

Verbena asks for sun and drainage, and Dubai's sand gives the second. NC State says it needs full sun for the best flowering and is fairly drought tolerant once established, with root rot the risk from overwatering. Clemson adds that verbena must have well-drained soil, will not tolerate poor air circulation, shade or soil that stays overly moist, and that plants in very sandy, poor soil may need more frequent feeding. So: full sun, compost in the sand, drip rather than overhead watering, and a regular feed.