16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

Zinnia is a genus of plants of the sunflower tribe within the daisy family. They are native to scrub and dry grassland in an area stretching from the Southwestern United States to South America, with a centre of diversity in Mexico.

  • Growing season: spring americanmeadows.com
  • Family: Asteraceae
  • Genus: Zinnia; L.
  • Order: Asterales
  • Kingdom: Plantae
  • Tribe: Heliantheae

Grow these fabulous multi-coloured blooms to create stunning summer bouquets.Native to Mexico and South America, zinnias are named after the 18th-century German botanist Johann Gottfried Zinn, who is credited with being the first Western scientist to record them.

Zinnias planted solely to brighten up our garden never cease to amaze us with their bright flowers that open continuously from mid-summer until the first frosts.

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1. Facts about the zinnia flower

  • Common names: Old, spinster, and zinnia
  • Botanical name: Zinnia Elegans (most common)
  • Plant Type: Annual
  • Colours: Green, fuchsia, multicolour, orange, purple, red, white and yellow
  • Origin: Mexico and South America
  • Ideal growing conditions: From seed; full sun; well-drained soil. Avoid organic mulching and overwatering, as both contribute to
  • Oho, you stem rot.
  • Size: from 15 cm to 1 m in height
  • Zones: All
  • Flowering time: From summer to fall
  • Organizing Tip: Remove lower leaves before using them in bouquets to prolong flower life and avoid bacteria in the water
  • Duration in the vase: From five days to a week
  • Meaning: Friendship

2. You, too, will love growing zinnias for all that they offer:

  • 1. A rainbow of colour options. They are available in all striking hues except true blue so that you can pair them with your favourite annual or perennial flowers, foliage plants, and herbs.
  • 2. A height for each site. Want tall, edgy plants with huge dahlia-like blooms? Do you need a low-growing flower with colourful but straightforward petals? Zinnias do the job in both cases and many other situations.
  • 3. Hassle-free, big payoff. If a flower requires less time and attention than zinnias, let us know because we have to know it.
  • 4. A feast for the birds and butterflies. Plant a patch of zinnias and watch your garden come alive with the entertaining activity of wildlife on the fly.
  • 5. Endless bouquets. The more flowers you cut from the zinnias, the more they produce. Each week, you’ll get a fresh fragrance that no florist could match.

Of course, we could continue to talk about our love for zinnias, but we’ll let the photos speak for themselves – after viewing, come back here to find out how to grow them yourself.

3. Start growing the zinnia flower from seed.

In places where spring warms up early, wait until the last frost has passed before directly sowing your zinnia flower seeds outside. Sow the seeds just ¼ inch deep. You will see the seedlings sprout in four to seven days. Once these seedlings are about 5 cm tall, rinse them, so they are 15 to 18 cm apart to maximize air circulation (the key to keeping zinnias looking good all season).

In colder climates, start planting indoors four to six weeks before the average date of the last frost in your area. Harden the plants by leaving the trays outside for a few hours a day before planting them in your garden.

If you buy zinnia plants at the garden centre that have already reached the flowering size, ease the transition into your garden by pruning the plants by one third. Then sit back and watch your zini park mature and bloom.

4. Avoid problems

We are ready to guarantee that zinnias will not let you down. But if you live in a place where late summer nights are cool and humid, be prepared for a possible powdery mildew encounter. Prevention is your best defence against this annoying fungus.

He recommends protecting zinnias from greyish-white growth by maintaining good air circulation around them, watering the roots, and choosing mildew-resistant varieties (see “Top 5 Options” for specific recommendations). Last summer, Japanese beetles swarmed the zinnias growing in OG’s test garden.

5. Five most chosen zinnia flowers

Every year a new crop of zinnia varieties is considered the best. We have grown many of them, and we have entered the tumult of pinks, yellows, oranges and reds to compile this list of successes.

16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

6. Big time – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

If you want big, bright and bold blooms, you’ll love ‘Benary’s Giant’ (Zinnia Elegans). Even in the saturated air of a Pennsylvania July, these Goliaths remain mould-free. Sometimes they get tired of standing perfectly upright when summer comes to an end. Some gardeners start this second seedling floor in June and transplant it in mid-July. The result? Clean, fresh and upright blooms from August until frost.

7. Medium magic

You’ll find plenty of mid-rise zinnias to choose from, including caramel-striped heirlooms and “cut and go” mixes. A jaw-dropping new look arrives when you think you’ve settled on a favourite. This year the novelty was “Zowie! Gold Flame”. It’s not imposing, but it doesn’t flinch either, growing to a full 12 inches tall, with a mix of red and gold. Interesting up close and striking from afar, the effect is like a French marigold mass on steroids. And not only did we like them, but butterflies preferred them over all other varieties. Pretty in a blue vase.

8. Winner of an award – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

Many zinnia flowers have passed the rigorous testing necessary to win the All-AmericaSelections award. But the only series to win the coveted AAS Gold Medal was the hybrid Profusion series. The neat mound shape, uniform colour, and disease and drought tolerance of ‘Profusion’ zinnias have convinced researchers, landscapers, and home gardeners. Unlike most zinnias, which are sold In multicolour mixtures, ‘Profusion’ is available in a single colour: Orange, Cherry and White. It is beneficial for those who like to plan the colour of their gardens. Look for new colours in the world.

9. No fungus – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

If you want a different-looking zinnia that bravely resists powdery mildew, try growing the narrow-leaved Z. Angustifolia. It is sold in the Star series or the Crystal series and is painless, drought-tolerant and is a perfect size (about 12″ high and wide) for the front of the bed. We found her to be very companion – party terms, “a good mixer”. Sneak young plants into the holes left by May tulips and perennials that aren’t as perennial as you might think – these varieties have a way of making everything around them look better.

10. Rough and difficult

Varieties like “Old Mexico” and “Persian Carpet” are two excellent members of the species Z. haageanas. They have a rough and tousled habit, and the rich gold, red and copper colours herald the arrival of autumn. The ‘Old Mexico’ has mostly double flowers (two layers of petals instead of one), while the ‘Persian Carpet’ produces double and semi-double 5cm flowers in bold autumnal hues.

The two alternative zinnia flower species just mentioned -Z. angustifolia and Z. haageana- have a strong natural resistance to powdery mildew. Breeders have retained this trait in series such as Profusion and Pinwheel, making these modern hybrids especially attractive to us organic gardeners, who prefer prevention to treatment of a problem.

11. Save for a bright future – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

You might think that saving seeds is a complex challenge that should be left to advanced gardeners. Not valid when it comes to zinnias. It couldn’t be easier, and when you save seeds, you not only get the colours you want (and only the ones you want), but you can also select the sources from the healthiest plants. Go ahead and, in a couple of generations of seeds, you will have developed your variety of zinnias selected to perform well under your conditions.

Right now, early fall, it’s time to give it a try. Get a few envelopes and a pencil; don’t forget the pencil because trust us, you won’t remember what’s in the envelope. Cut out a dried flower head of each colour you want to save. Disassemble the flower, remove the seeds inside, or put the entire flower in the envelope. Seal it and identify the colour. Store it in a cool, dry place until it’s time to plant next year. That’s it. You are now a seed saver!

16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022
16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

12. What to know about zinnias?

  • The zinnia flower is named after the 18th-century German botanist Johann Gottfried Zinn, who wrote the first scientific description of the flower.
  • Zinnias are native to Mexico, where the Aztecs originally called these flowers “evil eyes.”
  • When zinnias were introduced to Europe, they were called “flower of the poor house” and “flower of the whole world” because they were familiar and easy to grow.
  • Dwarf zinnias can be only 10 inches tall, while giants reach 4 feet.
  • Zinnias were popularly called “youth and old age” because old blooms stay fresh while new ones open.
  • The bright zinnia flower ‘Coral de Magellan’ was honoured with the 2005 All-America Selections Award.
  • From 1931 to 1957, the zinnia was the state flower of Indiana. (The peony replaced it.) – LS


Zinnia is one of the most colourful and beautiful species that you can grow in the garden or even indoors in a place with a lot of light. It is a plant of Mexican origin and, although it is usually grown as an annual plant, the truth is that it is a perennial plant that lasts for several seasons in frost-free climates. As I planted one in my garden a few weeks ago, today I want to tell you what a zinnia is, how to grow it and what factors affect its proper development.

Our protagonist is known by other names, depending on the place, and you may have heard her reputation as a paper flower or mystical rose. The plant is not very big; the usual thing is that it does not reach 90 cm in height or the best circumstances. The leaves are oval, deep green and quite rough. But even though it is a short plant, its pretty flowers make it a favourite of many gardeners, mainly because they have very bright colours that give joy to the garden from late summer until well into autumn.

14. ZINNIA PLANTS – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

Zinnias bloom from spring well into fall. During this period, they abound on the counters of the nurseries and draw attention for their intense tones that can be yellow, red, pink and even white. If you need a plant to decorate the interior of your house on a special occasion, zinnia is a perfect choice. After a few days, do not forget to take it abroad, because, in reality, it will be better there.

In the garden, you have many possibilities. If you don’t have a lot of space (as is my case), an isolated specimen will be the focal point of fall. But if you can expand, do not hesitate to plant a generous group forming a flower bed or a flowerbed. It will be quite a show.

You can buy your first zinnias at the nursery, but then collect the seeds and save them for the next season because they are easy to reproduce from sources. Although they are susceptible to some diseases and pest problems, they are generally low maintenance plants.

16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

Zinnias grow and bloom best in full sun and thrive in soils of many types as long as they are well-drained. The roots rot quickly if the soil is clayey, heavy and humid. If you sow zinnia seeds, do so in rich, sandy soil when there is no longer any chance of frost. In warm regions, such as the Mediterranean, where frosts are not a problem, zinnia seeds grow as soon as night temperatures remain above 10ºC. Another option is to sow zinnia seeds indoors, where the extra protection will prevent surprises if it’s bitterly cold one night or frost falls.

If you buy the plants already developed, you will spend a little more, but you will get faster results. Position the plants, leaving enough space between them to not disturb them when they grow. It is advisable to leave about 30 cm between them.

In addition to full sun, zinnias need constant humidity to grow well. Naturally, they bloom almost non-stop, although it is advisable to remove faded flowers to make the plant look more beautiful and help form new flowers. By the end of the summer, the bushes may have grown very large and presented a somewhat awkward shape, not very aesthetic. Feel free to trim them low enough for compact, much prettier growth and a new wave of flowers the following season.

A regular dose of fertilizers favours flowering zinnias. The experts advise a balanced 10-10-10 fertilizer, which we will apply every two or three weeks during the growing season, always following the instructions on the container.

16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022
16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022


Colourful and long-lasting flower arrangements can make with zinnias. I love informal bouquets with the different varieties that exist at this time. As soon as we cut them, we must place them in a vase with clean and fresh water that we change every two or three days. A specific preservative in the water in the vase will help the flowers last longer. There are commercial products for this, but there are also some homemade recipes that you can try. Most of us know a trick. I’ll give you mine, I discovered it a long time ago, and it works well: mix one teaspoon of vinegar, one tablespoon of sugar and one crushed aspirin in 3/4 l of water.


Zinnias are prone to several fungal diseases, and when they do occur, there is no cure for infected plants. The excellent drainage of the soil where the plant grows is the best prevention. It is also convenient not to plant them crowded but to leave space between them so that the air can circulate freely between the branches and leaves. You should never water a zinnia by wetting the aerial part; it is best to use droppers, if possible and, if not, water so that the waterfalls directly on the base of the plant.

If you have to remove a diseased plant, don’t ever put it in the compost bin. Composting diseased plants spread disease. Diseased specimens must be discarded.

Zinnias are also not free from the attack of some insects: leaf miners, aphids, mites, or beetles are some of them. In my case, night slugs are my main enemy.

There are various ecological solutions to fight the bugs that attack our plants. To know some of them, I recommend you read some of the articles that we have already written on the blog

Annual flowering plants – 16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

  • Marigold
  • Common zinnia
  • Cosmos
  • Phlox
  • Petunia
  • Calendula
  • Periwinkle

Do zinnias come back year after year?

Zinnias work year after year. It’s easy to save zinnia seeds. Simply let the flowers dry fully on the stem, then collect the seedheads and lightly crush them in your hand to release next year’s seed crop.

Where is the best place to plant zinnias?

full sunWhen & 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.

Do zinnias bloom all year?

Photo by: Unverdorben Jr / Shutterstock. One of the easiest annuals to grow, zinnia flowers bring an explosion of color wherever they go. The show lasts from late spring until the first frost in fall. Butterflies and hummingbirds are attracted to the cheery flowers that bloom in nearly every bright color imaginable.

Do zinnias bloom all summer?

Zinnias are a “cut and come again” flower, so when you cut the plant “hard,” it responds by sending out even more long, strong stems all season long. … If you follow these few simple steps, you’ll have beautiful long-lasting blooms that hold up 7-10 days in a vase.

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16 Zinnia Flowers How to Grow and Care for Zinnia Plants 2022

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