Four Nerve Daisy, Tetraneuris scaposa, is a xeriscapic, perennial, evergreen native of Texas. This means that this wildflower is one that does not require a lot of water, it lives longer than 2 years, it has foliage that stays green year round and it naturally grows in Texas. It is also a member of the Sunflower family.
Blooms and Leaves:
Four Nerve Daisies will have yellow flowers from March to October, but they can sometimes bloom year round. They are relatively small plants only growing up to 8 inches tall and 1 foot wide. This plant has many branches at the base which forms an upright, silvery clump due to the long, thin silvery green leaves. The yellow flowers have a yellow disk in the middle of the bloom and have several ray flowers that are yellow and have three-toothed tips.
Care for the Four Nerve Daisy, which is also known as Bitterweed, begins with where it will grow best. Soil requirements are not difficult. It will grow in sandy, clay, rocky, limestone and loam. It does best in full sun or some shade and does not require a lot of water. Bitterweed seems to like drought, rocky, poor soil conditions. It is green when other plants are dead or there is not any to be seen.
Propagation is generally with fresh sown seeds. This plant is not a fast growing plant.
Four Nerve Daisy can be used several ways. It can be used as an ornamental plant, in a perennial hummingbird garden, in a border, in a rock garden or just on a rocky hillside.
Four Nerve Daisy, which is better know as Bitterweed in the farming and ranching industry, can cause detrimental problems to any sheep raising outfit. Bitterweed has a toxin, sesquiterpene lactone, in it that increases as the plant matures. This toxin is fatal to sheep and cattle. Cattle are not as prone to eat it as sheep are even when grazing conditions are terrible.
Although Four Nerve Daisy or Bitterweed is one of the beautiful blooming plants or weeds seen throughout Texas, it is not necessarily one of the ones that should be included in a landscape, especially if there is any chance that an animal or person may eat it. Luckily it does smell and taste bad, but the chance is just not worth it.