Stems prostrate, with numerous spreading hairs . . . . . . . . . . Spotted spurge is often found in citrus groves where it is tolerant of the herbicides commonly used for weed control in citrus. In addition to reducing the growth of desirable species, spotted spurge reduces uniformity and quality of turf, provides habitat for undesirable insects in citrus, and serves as an intermediate host for fungal diseases of cultivated crops. Spotted spurge is poisonous and has been known to cause death when sheep graze pastures where it is the predominant weed. A single plant is capable of producing several thousand seeds.
Seeds are small and can remain dormant in the soil until conditions are suitable for germination.
Seeds that are produced in summer germinate readily whereas those produced in late fall are mostly dormant and won't germinate until spring. Thus, when moisture is available, germination can occur from February through September in most areas of California. Plants that germinate early in spring under cool conditions may remain as small seedlings until temperatures are more desirable for growth. As growth continues, the leaves form a dense mat that can grow up to a meter in diameter. Reproductive growth is rapid and seeds can be produced as soon as 5 weeks after germination.