Veronica filiformis aka Creeping Speedwell

Veronica filiformis, also known as slender speedwell, creeping speedwell, threadstalk speedwell, or Whetzel weed, is a flowering plant in the Plantaginaceae family. It is native to eastern Europe and western Asia, but has become an introduced species in many regions, including North America. This showy plant has attractive blue flowers on elongated pedicels and small leaves. It can aggressively escape cultivation and spread vegetatively, although fruit is rarely seen in North America. To get rid of it, Roundup Gel or ready-to-use spray can be used, and dead foliage should be removed after three to four weeks. Threadstalk Speedwell is also a rare houseplant that requires regular watering and direct light, less than 1 foot from a window. It prefers well-draining soil and should be repotted each time it doubles in size, eliminating the need for added fertilizers.