As the creeping root system of Californian thistle is deeper in the soil than the residual herbicide, the plant is unaffected. No other thistle species in New Zealand is a perennial. Other species are ...

Scotch thistle is a biennial weed, so it depends quite heavily on the establishment of seed on a regular basis if it is to be found commonly in any particular situation. In contrast, many pasture ...

Globe Thistle (Echinops spp.) Globe Thistle is a unique and striking tall perennial that adds texture and interest to the garden. This plant is known for its spherical, spiky blue or white flowers ...

Improving the soil means adding organic matter such as compost that will act like a sponge to hold more moisture. But you can also tame thirsty roots by encouraging a deeper and wider root system that ...

Canada thistle, a terrestrial herbaceous perennial in the Asteraceae family, is an open-land invasive that prefers disturbed upland areas as well as wet areas with water fluctuations. Canada thistle ...

Fallow may also be used to control perennials such as Canada thistle and perennial sow-thistle. With these species, the first tillage should be done at the bud stage. Food reserves are at a low at ...

Canada thistle is a colony-forming perennial from deep and extensive horizontal roots. Stems are 1 to 4 feet tall, ridged, branching above. Leaves are alternate, lacking petioles, oblong or ...

Cirsium arvense: Also known as creeping thistle, it is a perennial weed that spreads through underground roots. Rhizome: A type of underground stem that can produce new shoots and roots ...