field note: Helianthus annuum (sunflower)

observation
sunflower exhibits heliotropism during early growth, orienting toward light throughout the day. mature plants tend to fix eastward.

structure
the plant produces large composite flowers and oil-rich seeds. petal color varies by cultivar, ranging from yellow to deep red.

properties
sunflower seed oil is lightweight, high in linoleic acid, and supports barrier function. it is generally well tolerated and does not occlude heavily.

application
used as a base oil for:

• barrier support

• dry or compromised skin

• infusion of additional plant material

process note
sunflower oil performs well as an infusion medium. when steeped with dried petals, the oil carries both the lipid profile of the seed and additional compounds from the flower.

note
the seed and flower contribute differently. the seed provides structure and emollience; the petals modify the character of the oil.