Celosia Leaves Turning Yellow. Several common nutrient deficiencies in your soil will turn leaves yellow including low levels of nitrogen iron or potassium. Going to remove bottom of track lights turn into pendant lights.
Identifying which leaves turn yellow first and how the yellowing starts provides clues to common deficiencies 1 such as these. Thomas jefferson once referred to celosia as a flower like the prince s feather also known as cockscomb the unique brightly colored plumes of celosia fit in all types of gardens a perennial in zones 8 10 celosia is often grown as an annual in cooler climates. Because yours have both fading flowers and brittle leaves this leads me to think that there could be a problem causing decline.
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Assume some type of insect. Note the left bottm of the pic where the leaves are getting holes in them now. Several common nutrient deficiencies in your soil will turn leaves yellow including low levels of nitrogen iron or potassium. As it progresses yellowing moves outward eventually reaching young leaves too.