Asked by: Fadila De Roca
home and garden landscaping

How often should I water my zinnias?

Last Updated: 18th March, 2020

Irrigation for Regular Maintenance
Zinnias can withstand moderately dry soil conditions but do better with supplemental watering. In general, zinnias typically need 1 inch of water once every five to seven days. However, check soil moisture depth to ensure you're providing enough irrigation.

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Thereof, can you overwater zinnias?

Supply at least an inch of water every week during dry, hot weather. When watering, soak the soil so that it is moist, but not soggy. Never over-water because this will cause water-logging. Avoid watering the foliage, because zinnias are susceptible to mold and fungal problems if the leaves are left wet.

Additionally, do zinnias need full sun? A warm-season annual flower, zinnias like full sun and rich, well-drained soil. They are easy to grow and will tolerate average to slightly poor soils. Preparing garden beds with generous amounts of organic compost or well-aged animal manure will improve the health of plants tremendously.

Simply so, how do I take care of my zinnias?

How to Care for Zinnias

  1. Maintain moderate soil moisture and fertilize lightly to maximize growth and blooms.
  2. After zinnias flower, cut off the old flowers (a process called “deadheading”) to encourage more flowers to form.
  3. Zinnias are annuals and will die with the first fall frost.

Why are my zinnias dying?

Zinnias dying. A: Zinnias can be prone to several bugs as well as the most common problem -- powdery mildew, which is a disease that turns the leaves whitish, then brown. The holes could be due to Japanese beetles or to a couple of other smaller beetles that sometimes eat zinnia leaves.

Related Question Answers

Zaineb Thomisch

Professional

Should zinnias be deadheaded?

Deadheading a Zinnia. A zinnia is a very beautiful flower that can be provoked into flourishing by deadheading. Planting the zinnia and making sure that it gets enough sun, food, and water are all important to keeping the flower blooming, but deadheading is what will keep the zinnia blooming all season.

Lisset Landsch

Professional

What's wrong with my zinnias?

Zinnias are susceptible to a disease called bacterial leaf spot. Here's a link to an OSU article on the subject, with photos of the leaves before the centers drop out of the infected tissue. At the end of this season, remove ALL plant tissue from these plants, and dispose of them in a method other than composting.

Georgie Eriksen

Professional

Do zinnias do well in pots?

Potting and Planting
Zinnias can grow in any type of container, including plastic or clay pots, wooden half-barrels, a window box or a hanging basket, but choose a container that has at least one drainage hole to help prevent fungal growth in the soil.

Page Azinhais

Explainer

What is the best fertilizer for zinnias?

Like most annuals, zinnias benefit from regular fertilizer applications. Apply a balanced fertilizer, such as 10-10-10 fertilizer, according to its package directions every three to four weeks during the growing season.

Axular Rotfuchs

Explainer

Grigory Habin

Explainer

What causes brown leaves on zinnias?

Although zinnias are relatively disease-resistant, they are sometimes plagued by diseases that cause brown spots. The brown spots are usually caused by one of three types of leaf spot -- Alternaria leaf spot, bacterial leaf spot and Cercospora leaf spot.

Katharine Urvois

Pundit

Do zinnias like sun or shade?

When & Where to Plant Zinnias
Light: Zinnias grow and flower best in full sun. They can flower in part shade, especially in warmer climates with afternoon shade, but they may be more susceptible to disease and have fewer flowers. Soil: Zinnias grow best on fertile, well-drained soils high in organic matter.

Xuezhen Saloguen

Pundit

How do you fertilize Zinnias?

Fertilizing zinnias helps keep new flowers blooming throughout the growing season. Give an initial feeding when seedlings are about 4 inches tall, using a 5-10-5, water-soluble formula. Dilute the fertilizer to 1/4 strength, or 1/4 teaspoon per 4 gallons of water, following all product instructions.

Marisel Cristobal

Pundit

Do I need to deadhead my zinnias?

Since they're fast-growing, they shade out weeds. They don't require much in the way of fertilizing (just an occasional well-balanced mix), and they don't need mulching. Deadheading helps to produce more flowers.

Barb Avia

Teacher

What do good zinnia seeds look like?

The seeds will be arrowhead-shaped, pointed on one end and broader on the other, each having a raised spine running up its back. They will measure about 3/8 to 1/2 inch long, if harvested from medium-sized zinnias, and usually slightly less than 1/4 inch across at their widest point and brownish in color.

Shirlee Terramoto

Teacher

Can you save zinnia seeds?

Only save seeds from open-pollinated varieties. There are plenty of heirloom varieties, though, that you can save seed from and grow year after year. You will have to put up with some unsightliness; spent zinnia flowers can be on the ugly side. The only way to get seeds is to let the pods dry on the plant.

Gaetan Tenbrink

Teacher

Do zinnias reseed themselves?

Zinnias (Zinnia spp.) reseed easily, creating a cut-and-come-again garden each summer. Heirloom varieties, cultivated for more than 50 years, are open pollinated and grow into plants identical to their parents. Zinnia hybrids also reseed but may look quite different.

Xuefen Vanchurov

Teacher

Do zinnias bloom all summer?

Zinnias produce colorful summer blooms that last well into fall. The bright-flowering zinnia (Zinnia spp.) The plants grow in all of the U.S. Department of Agriculture plant hardiness zones as annual flowers.

Alease Hanukov

Reviewer

Should you soak zinnia seeds?

Seeds can be planted indoors 6-8 weeks before the last frost and the seedlings can be easily transplanted into your outdoor garden later on. Remember that germination is less successful in cold soil. Moreover, it is best to soak dried seeds in water for 4-6 hours before planting.

Glafira Peñasco

Reviewer

Do zinnias like lots of water?

Zinnias can withstand moderately dry soil conditions but do better with supplemental watering. In general, zinnias typically need 1 inch of water once every five to seven days.

Leandro Bar

Reviewer

What do zinnias attract?

Zinnias attract and benefit pollinators. Zinnias themselves are pollinated by insects, typically bees and butterflies. Their bright colors draw pollinators to a garden. Monarch butterflies, in particular, love zinnias and pollinate them and use them for food and egg-laying habitat.

Wanetta Canotinho

Supporter

Why are my zinnias turning yellow?

Foliage Curls, Puckers, Turns Yellow Due To Aphids
They tend to cluster on tender, new growth on zinnia stems and on the undersides of young leaves. They suck juices from plant cells, causing foliage to curl, pucker and turn yellow. Often the leaves and blossoms become stunted.

Fatouma De Los Reyes

Supporter

Can you plant zinnias in the shade?

While it is possible to grow zinnias in less than six hours of full sun each day, zinnias in even light shade might produce fewer flowers on smaller plants. Another concern with planting zinnias in part shade is powdery mildew, a fungal disease that thrives in cool, humid areas where air circulation is poor.

Gurutze Prera

Supporter

Are zinnias toxic to dogs?

Zinnia. Another good-looking and pet-friendly member of the daisy family, zinnia are considered safe for your cats and dogs. These flowers, which can pass as an identical twin of daisies and dahlias, are amazingly prolific bloomers, especially during summertime.