What is a weed?
Any plant that is unwanted, out of place, or just has no discernable value can be considered a weed. Approximately 3% (8,000 of 250,000) of plant species found worldwide are classified as weeds. Weeds are typically grouped into 2 categories based on their plant
structure:
● Broadleaf weeds usually have flat leaves, netlike veins, and grow by means of a taproot or coarse root system. When they first germinate, two leaves emerge from the seed.
● Grassy weeds grow narrow, upright leaves and have parallel veins. They sprout only one leaf from the seed pod and develop a finer, more fibrous root structures. Weeds are also classified by their life cycle. Just like flowers and
other desirable plants, they can be annual, biennial or perennial.
● Annuals complete their life cycle within one year or less, and can be further divided into summer and winter species-depending on when they begin to grow.
● Biennials take two years to germinate, bloom and die. They are the least common type of weed, and will germinate in any growing season.
● Perennials live at least two years, and have the potential to reproduce indefinitely. If you don't remove the entire root system, they'll grow back again and again.