The following lists show some of the hardy and non-hardy annuals and biennials that can tolerate growing in very alkaline soils:

Hardy

• Calendula officinalis (English marigold)
• Cheiranthus cheiri (Wallflower)
• Cosmos
• Dianthus (some) (Pink)
• Lavataera trimestris (Mallow)
• Lobularia maritime (Sweet alyssum)
• Matthiola (Stock)
• Salvia horminum (Clary)
• Tropaeolum speciosum (Flame flower)
• Tropaeolum majus (Garden nasturtium)

Non-Hardy

• Ageratum houstonianum (Floss flower)
• Antirrhinum majus (Snapdragon)
• Callistephus chinensis (China aster)
• Dianthus (some) (Pink)
• Gomphrena globosa (Globe amaranth)
• Humea elegans (Incense Plant)
• Limonium sinuatum (Statice)
• Tagetes (French marigold)
• Tropaeolum peregrinum (Canary creeper)
• Xeranthemum annuum (Everlasting)
• Zinnia