Growing Zinnias in Pot
Zinnias thrive in full sun locate the pot at a spot where it receives around six hours of direct sunlight. The container must have drainage holes at the bottom and around 8-10 inches in depth & width. Well-draining soil rich in organic matter is ideal, but zinnias will grow in almost any soil. Keep the soil consistently moist but do not overwater, or the soil will turn soggy.
Choosing the Container
Go for a pot that’s 7-8 inches deep and wide to grow a single zinnia and a wider pot for growing multiple zinnias in one pot. The size of the container also depends on the cultivar you choose. Make sure the pot has drainage holes at the bottom to get rid of excess water.
Choose a sunny spot to place the pot as it encourages blooming and healthy growth. 5-7 HOURS IS IDEAL
The ideal soil would be well-draining and rich in organic matter, but zinnias are adapted to almost any soil. Increase drainage of the potting mix by adding river sand/perlite to the mix and organic matter by aged compost. Also, composting the soil will result in prolific blooming!
Keep the soil consistently moist but not so much that it turns soggy! Ideally, water when the soil becomes dry an inch below the surface, which you can check by poking your finger in the soil. Also, water at the base of the plant making sure to keep foliage isolated.
Deadheading is the process of cutting back the flowers that are past their blooming phase. It’ll promote more flowering as the plants’ energy is now redirected towards new blooms. Deadheading also improved the overall aesthetics of the plant!
Fertilizing with a well-balanced liquid fertilizer diluted half to its strength at the start of blooming season to promote blooming. Apply fertilizer every two to three weeks, and once the plant is finished blooming, stop fertilizing. It’s important to excess usage of fertilizer will do more harm than good.
Pests & Diseases
Common garden pests can cause a bit of trouble for the foliage and blooms, but it isn’t usually a cause of worry. You can easily get rid of these pests by handpicking or spraying neem oil solution, although spraying over the foliage should be used only as a last resort. Wetting the foliage can lead to bacterial and fungal spots, powdery mildew, and bacterial wilt. Avoid this by keeping the leaves dry by watering at the base, and keeping good air circulation around the plant. Also, do not overcrowd the zinnias in the pot!