How to Prune Shasta daisy 'T.E. Killin'?
Deadhead regularly then cut stems down to the ground in winter

Shasta daisy 'T.E. Killin' · Leucanthemum × superbum 'T.E. Killin'
Grow in moderately fertile, moist but well-drained soil in full sun or partial shade; plants may need support
Deadhead regularly then cut stems down to the ground in winter