How tall do zinnias get?

Asked By: Povilas Sarfatti | Last Updated: 20th June, 2020
Category: home and garden landscaping
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Choosing Types of Zinnias
Plant some giant zinnias, which can reach up to 4 feet tall. Need a low growing flower with simple yet colorful petals? Plant dwarf zinnia seeds, which can grow as short as 10-inches tall.

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Keeping this in consideration, how tall do zinnia flowers get?

Height/Spread: Varies by type. There are dwarf varieties 6 to 12 inches tall and wide, and others grow up to 4 feet tall and 1 to 2 feet wide.

Similarly, do zinnias come back every year? Zinnias are one of the easiest flowers to grow, as they grow quickly and bloom heavily. Zinnias are annuals, so they'll grow for one season and produce seeds, but the original plant will not come back in subsequent years.

Similarly, how long do Zinnia blooms last?

seven to 12 days

Do you pinch out zinnias?

Pinching. For the fullest, bushiest zinnias, whether you plant a short or tall variety, pinch off an inch from the growing tips of the plant as it becomes established and growth accelerates. The plant branches at the points where it is pinched.

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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.

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.

Can zinnias grow in pots?

You can plant them all the way through July for blooms until frost. 5 Zinnias will grow in large containers but not well in small pots. Choose a pot at least 12 inches across for best results. Taller growing varieties, such as State Fair, need the largest pots.

How often should I water Zinnia?

Mist the bed twice daily until the seeds germinate. * Water zinnias at ground level to prevent fungus. Once they are 3 to 4 inches high, water them deeply a couple of times a week, depending on weather. Zinnias aren't drought tolerant, but they like their soil a little on the dry side.

What month do you plant zinnias?


Planting: Plant zinnias in spring after all danger of frost has passed, around the same time you'd plant tomatoes. Zinnias are easy to grow directly-seeded into the garden. For sooner blooms, start seeds indoors 4 to 6 weeks before your last frost date.

How do you take care of zinnia seedlings?

Watering and Feeding
Water newly planted zinnias frequently during the first few weeks, keeping the soil moist to establish roots. Once roots are established, water as needed. Keep the soil damp but avoid overwatering. Cover the planting area with 3 to 4 inches of mulch to keep the soil moist and weeds at bay.

How many times do zinnias bloom?

Depending on the weather, the 20 or so species in the Zinnia genus typically flower from 60 to 70 days from the time you plant the seed.

How early can I plant zinnia seeds?

Start zinnia seeds early indoors for transplanting outdoors about 6 to 8 weeks before the last frost date (see Starting Annual Flowers Indoors). In warmer climates, sow seeds directly into planting areas and cover lightly with soil.

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.

Are all zinnias cut and come again?


Fact is, they're all so easy, and so long blooming, any Zinnia will perform about the same. They'll all "come again" if you cut the fading flowers. Easy! Easy!

Is zinnia a perennial?

Zinnias are annuals. The first frost of fall kills them, and gardeners must plant them anew in late spring. Gardeners may sow seeds directly in well-drained soil outdoors after the last frost of spring. Succession plantings every two to three weeks will ensure a long season of vivid color.

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.

How do you keep petunias blooming?

To encourage additional blooms from petunias, old blooms should be removed through deadheading to encourage new blossoms instead of seed production.
  1. Look for signs that petunia blooms are beginning to fade and die.
  2. Remove, or deadhead, the petunia plant by hand.

How long are zinnia seeds viable?

Zinnia seeds can remain viable for about 5 or 6 years.

Where do you cut zinnia flowers?


Cut zinnia stems at an angle just above a bud joint. Zinnias are typically long-lasting in a vase—strip the stems of all but the most visible leaves before setting them in water.

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.

How do I store zinnia seeds for next season?

  1. Stop deadheading zinnias at the end of the summer to allow the flowers to develop seeds.
  2. Carry small paper or plastic bags into the garden in the fall, preferably on a dry day with little wind.
  3. Hold a bag or container under each seed head and snip off the seed heads with pruners, letting them fall into the container.