Gardening Questions And Answers
Commonly known as snapdragons, these are easy-to-grow, old-fashioned cottage garden plants, beloved by children and bees. They come in a range of different colours and heights, and therefore can be grown in a variety of situations. Attractive to wildlife, they have a long flowering period, from June until October.
When soil is flooded or saturated for more than a few days, root injury or death ensues because roots cannot perform basic, necessary functions, such as taking up oxygen and nutrients. Even though there is more than enough water in the soil, the roots are unable to absorb it and the plant reacts by wilting.
Other deer-resistant annuals include the popular annual vines, morning glory and moonflower. Cool-season bloomers larkspur (Consolida), sweet William (Dianthus), snapdragon (Antirrhinum majus), sweet alyssum (Lobularia maritima) and lobelia (Lobelia erinus) all are reported to be deer resistant annuals.
A wide range of sap-sucking insects love snapdragons. Aphids, mites, mealybugs, and whiteflies are common sights in stands of snapdragons. These pests can cause disfigured leaves and flowers if they feed on buds; otherwise, you may notice stippling on leaves or a general lack of vigor as populations rise.
Snapdragons prefer a medium watering schedule, which means watering about once a week during periods of low rainfall. Soak the soil in the garden bed until the top 1 inch is saturated. Check the soil more frequently during hot, dry weather. If the top inch feels dry before a week has passed, water sooner.
Diseases. Downy mildew, a fungal disease, leads to the yellowing of leaves on snapdragons. Caused by the pathogen Peronospora antirrhini, downy mildew primarily occurs during moist, cool weather and may develop quite quickly. A disease referred to as snapdragon rust is also responsible for leaf yellowing in snapdragons
Fertilize snapdragons as soon as they start producing flowers. Stake taller varieties so they don’t fall over under the weight of those stalks of flowers. Prune spent blooms during the spring to keep the snapdragons blooming. Cut them back in the dog days of summer and they’ll bloom again when cool weather returns.