Lanceleaf Coreopsis (Coreopsis lanceolata) are easy to grow, and do well in rocky, sandy or poor soil. We collected our original wild seed crop off the edges of a cliff! Lanceleaf coreopsis plants grow into somewhat orderly looking clumps and deadheading will prolong flowering.
Wet and cold stratification required. Mix seeds with moist substrate (vermiculite, perlite or moss) and place in a plastic bag and refrigerate for 6-8 weeks. Sow seed at 1/8 inch depth. Do not let seedling dry out while it is establishing.
Sow directly outdoors in late fall to overwinter.