= Water twice per month or less, once established.
= Water about once per week, once established.
= Water about twice per week, once established.
= Water three days per week, or more.
Use the plant water needs as a guideline. Actual plant water needs will vary for several reasons, including weather conditions, soil type, sun exposure, root depth, wind and elevation. Adjust your watering schedule as needed to meet the plants' needs at your site. Water recent transplants more often than established plants.
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Zinnia grandiflora
very low
yellow
summer to fall
4 to 8 in.
12 to 15 in.
Yes
central southern United States and northern Mexico
sun
USDA zones 4-9
hardy to 6,000 ft.
Prairie zinnia is a compact, mounded perennial flower with thin, needle-like leaves. This native plant is especially valuable for its heat and drought tolerance.
Even more, it blooms from mid summer through fall, constantly producing bright yellow flowers which turn into papery seeds. It grows best in hot sunny areas with well-drained soil.
Prairie zinnia has proven to be one of the most heat and drought tolerant perennial flowers at the Xeriscape Demonstration Garden. The continual production of bright yellow flowers is amazing. It makes a great filler plant among other perennials and shrubs in very low water areas.
Prairie zinnia stays dormant late into spring. It is one of the latest plants to green up, but its spectacular show is worth the wait.
Remove old plant material in spring before new growth starts.
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