The HTA's Plant for Life campaign has launched its Plant of the Month initiative with a fresh online and print campaign for spring.
The March push is for Hebe, while Ceanothus will headline for April and lavender will take the limelight in May, said the Horticultural Trades Association.
The aim of the campaign is to make it easier for the marginal gardener by selecting a widely available plant on a monthly basis that will look good.
Plants were chosen by the HTA ornamentals committee and the HTA retail management group to ensure the campaign met needs of growers and retailers.
A representative said: "Interest from HTA garden retailers has been strong, with over 750 outlets, smaller independents and larger chains alike signing up."
They receive free point-of-sale materials including A3 Correx boards and bedcards, with artwork designed to appeal to the predominantly female marginal gardener.
Jennifer Thwaites, HTA promotions manager, said: "Plant of the Month will provide a focus for retailers and consumers alike."
The Plant of the Month calendar for the rest of the year is:
November soft fruits
December trees and hedging
February evergreen Clematis