Yarrow

Asteraceae family 
Yarrow is a common relatively short perennial herb which produces one to several 8 to 40cm tall stems. The flowers are white or pinkish flowering in early summer to autumn.
 
Pros
	
	
plant the seeds no more than 0.5 cm deep; they require light for germination
	
	
	
germination temperature range is 18-25 degrees Celsius 
	
	
	
freely seeds
	
	
	
likes soil that is poorly developed and well-drained. 
	
	
	
has a fibrous underground horizontal root 
	
	
	
very drought tolerant 
	
	
	
accumulates nutrients - its deep roots mine the subsoil for potassium, calcium, and magnesium, phosphorus and copper, making it a nutrient-rich mulch
	
	
	
used in a mixed cover crop to build soil, mine minerals, break up compacted soil and attract beneficial insects
	
cons
	
	
can become invasive
	
	
	
gets mildew or root rot if not planted in well-drained soil