The Antirrhinum majus is commonly named snapdragon and is a genus from the plantain family (Plantaginaceae). The name comes from the Greek where "anti" means "like" and "rhis" means "nose" or "snout". This refers to the appearance of the flower which looks like a dragon’s snout.
These (see photos) are cultivars. This snapdragon produces seeds and the seedlings will appear the following year.
This is actually a perennial and in very mild winters it will not die. The bloom of the old plant is less abundant the second year.
It is always a surprise which flower colors you will get from the seedlings. I bought a red Antirrhinum majus and the next year I had orange, yellow, pink and red ones in return. If you do not do anything, seedlings will arise near the old plant around the end of May. If you want to decide where the seedlings will grow, you can collect the seeds and scatter them where you want them to grow. The seeds are ready to be harvested when the top of the seed capsules is open.
You can start the seeds indoors in February. After the last frost you can plant the seedlings in the garden.
The height of the Antirrhinum majus can vary. This depends on the amount of sun. The fewer hours of sun the smaller the plant and the fewer the amount of flowers.
The snapdragon prefers nutrient-rich and well-drained soil, preferably a bit sandy and chalky soil. The Antirrhinum majus likes warmth and is drought tolerant. The snapdragon has a taproot that runs reasonably far into the ground. Because of this deep root this plant is pretty drought tolerant.
If you deadhead the spent flowers it will prolong the bloom because it will not put its energy into making seeds.
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Attracts bees: yes
Characteristic: annual
Deer resistant: yes
Exposure: sun/part shade
Flower color: various
Flowering time: June – October
Foliage color: green
Fragrant flower: no
Hardiness: 23 ºF/-5 ºC
Height: 20 inches/50 cm
Soil: normal/dry