Snapdragons (Antirrhinum majus) are lively plants with spikes of colorful blooms that with proper care will delight you from spring until the first frost. To be sure the snapdragon continues to bloom until the end of the growing season, the wilted flowers should be removed, or deadheaded, regularly. Blooms allowed to remain on the stem will go to seed, thus shortening the blooming life of the plant. As an added benefit, deadheading your snapdragon will prevent the plants from becoming straggly as the summer progresses, keeping them neat, tidy and healthy.
Deadhead snapdragons as soon as the flower begins to wither and turn brown. Spend a few minutes deadheading the snapdragons once or twice every week.
Pinch the stem between your thumb and forefinger, down to the next leaf, bud or stem to avoid leaving a stub. If the plant is getting leggy, pinch down a bit further, removing two or three leaves.
Discard the deadheaded blooms and don't allow them to pile up under the plant; wilted blooms and other debris can attract slugs, insects and mildew. Toss the blooms on your compost pile or in the garbage.