How To Plant Zinnias Outdoors

One of the simplest flowers to plant, zinnias grow quickly and provide a lot of blooms. Additionally, they will continue to bloom right up until the first fall hard frost. Consider trying zinnia flowers this year to add a huge splash of color to your yard.

About Zinnias

Since zinnias are annuals, they will only produce blooms and seeds for one season before dying. The original plant will not reappear the following year. They are excellent for use as a cutting flower or as food for butterflies since they have vivid, solitary, daisy-like flowerheads on a single, tall stem.

Types of Zinnias

Zinnia elegans, the most widely grown zinnia species, has been developed to produce a large number of distinctive variants.

Single, semidouble, or double zinnia blooms are the three most common varieties. The number of petal rows and whether or not the flower’s center is visible serve to distinguish between these forms:

  • A single row of petals and the center are both visible on single-flowered zinnias.
  • Petal rows abound on double-flowered zinnias, and their centers are hidden.
  • Between the two are semidouble-flowered zinnias, which have several rows of petals but discernible cores.

In addition to these shapes, zinnia flowers also occur in “beehive,” “button,” and “cactus” forms. Additionally, the plants themselves come in various heights: taller types function best as a garden bed’s background, while shorter varieties are useful as a border. There is a zinnia for every garden, in fact!

In an annual or mixed border garden, plant zinnias. Smaller zinnias work well as window boxes, edging, or in other containers.

To have a lot of flowers all season long, choose a place that receives full sun (6 to 8 hours of sunlight every day). Additionally, later in the season, foliar diseases like powdery mildew can be avoided by planting in an area with sufficient air circulation.

Although zinnias can grow in a variety of soil types, they prefer organically rich, well-draining soil. The optimal pH range for soil is between 5.5 and 7.5. The blooms will grow more quickly if compost (humus) is added to the soil. Find out more about soil improvements and getting the soil ready for planting.

When to Plant Zinnias

  • Because they dislike being transplanted, it is advised that you start your zinnia plants from seed directly in the garden bed. If the correct circumstances are present, they will develop quite quickly from seed.
  • It should be noted that zinnias can be grown from seed inside if you like. Just make sure to transfer them gently and young.
  • Because zinnias are delicate to frost, wait to plant them until after the last frost in your area. See the frost dates in your area.
  • Zinnias can tolerate daily temperatures as low as 60F (16C), although a range of 7484F (2328C) is ideal.
  • To prolong the flowering time, sow a new crop of seeds every week or so for a few weeks.

How to Plant Zinnias

  • Depending on the kind, place plants 4 to 24 inches apart. (Many common kinds are planted 2 feet between rows and 6 inches apart within the row.) For information about each variety, consult the seed packet’s back.
  • Plant zinnia seeds no deeper than 1/4 inch.
  • The majority of zinnia cultivars will produce seedlings in just 4 to 7 days, but it may take up to two months or more for blooms to appear (depending on planting site and climate).
  • To promote air circulation, thin seedlings when they are three inches tall, spacing them 6 to 18 inches apart. As a result, powdery mildew is less likely to grow.
  • To promote development and blossoms, keep the soil’s moisture level moderate and apply a mild fertilizer.
  • Deadhead zinnias once they have finished blooming to facilitate the development of new blossoms.
  • Since zinnias are annuals, they will perish with the first fall hard cold. Let the final blooms of the season fully mature before dispersing their seeds if you want them to reseed.

Zinnias still not your thing? In your garden, try them out for the following six reasons:

  • With cultivars from the Dreamland Series, you can have a full-sized flower on a little plant. These zinnias are compact and dwarf, with stems that are 812 inches tall and totally double flowerheads that can be up to 4 inches across with a variety of colors.
  • The dwarf, spreading cultivars of the Thumbelina Series have weather-resistant, solitary or semi-double flowerheads in a variety of hues. Their stems can reach a length of 6 inches, and their petals are 1-1/4″ wide.
  • One of the largest and tallest of them all, the State Fair Series has huge, double flowerheads that measure 3 inches in diameter. Stems can reach a height of 30 inches.
  • Typically, it takes zinnias 60 to 70 days from seed to flower (though it depends on conditions and variety). They are fantastic in a bunch of flowers!
  • The tiny, narrow-leafed zinnias are great for hanging baskets and also make lovely dried flowers.
  • Zinnias are considered to represent memories of those who have passed away. Discover more about the significance of flowers here.
  • Zinnias may be harmed by bacterial wilt, powdery mildew, and bacterial and fungal spots. To prevent illness, keep leaves from getting too damp and correctly space your plants.
  • Problems can also be brought on by caterpillars, mealybugs, and spider mites. Spraying should be avoided unless there is a real infestation because some leaf damage is not a problem.
  • Thanks to their resistance to deer, zinnias may be able to prevent surrounding flowers from being eaten.

When are zinnias suitable for planting outside?

Light: Full sun is ideal for zinnia growth and flowering. Even in warmer climates with afternoon shadow, they can flower there, but they may be more prone to disease and produce fewer flowers.

Soil: Organically rich, fertile soils with good drainage are ideal for growing zinnias. Because zinnia seedlings are susceptible to rotting in cool, damp soils, having well-drained soil is crucial.

Plant zinnia seeds in rows or clusters spaced a few inches apart. Once the plant has four leaves, thin to 8 to 18 inches apart, depending on the variety.

Planting: Plant zinnias in the spring, just about the time you plant tomatoes, when all threat of frost has passed. Growing zinnias from seeds straight in the garden is simple. Start seeds inside four to six weeks before to your last frost date for earlier flowering.

How far apart should zinnias be planted?

The zinnia may be the best flower for indicating the start of summer. This annual that thrives in heat has vibrant, eye-catching spherical blossoms that provide color to any garden.

Cream, yellow, red, gold, orange, pink, rose, lavender, purple, plum, scarlet, white, and salmon are just a few of the many hues that zinnias may be found in. The bloom comes in a variety of sizes, from a few inches to three or four feet tall.

“May is a terrific month to plant zinnias,” said Gary Hayakawa, general manager of Fountain Valley’s Three Star Nursery, a wholesale producer whose plants are sold at numerous nurseries around Orange County.

Before the summer heat hits, zinnia roots have a chance to establish themselves in May, he said. ” They really take off once the weather warms up. In hot climates, zinnias thrive.

There are a lot of medium-sized types of zinnias in the nursery that grow 10 to 15 inches. The Pulcino, Dreamland, Dasher, and Peter Pan are a few popular medium-sized kinds.

Dwarf zinnias are also available; one example is Thumbelina mix, which blooms at 3 inches. State Fair and Dahlia-flowered are two tall kinds that reach heights of two to three feet.

Consider the following advice to successfully grow zinnias:

* Because zinnias are susceptible to fungus, choose a position with full light and no overhead sprinkler watering.

* Before planting, thoroughly amend the soil with homemade or bagged compost. Zinnias prefer a soil that drains well.

* Unless the plant is tall and unstable, plant zinnias at the depth they are in containers. Plant it a little lower than the current soil level in such instance.

* Give zinnias room to spread out so that air can circulate, which reduces the risk of fungus and leaf spot issues. Smaller kinds should be placed 6 inches apart from large types, and vice versa.

* After germination, transfer zinnia seeds into the ground or place them in tiny containers first.

About six seeds should be spaced evenly in a 4-inch pot for planting in containers. After they sprout, divide them into four plants. When they are about 2 inches tall, transplant them in the garden.

Work the soil well and amend before direct seeding. Then dig a shallow ditch with 3 to 4 inch high sides. When you irrigate, this will keep the water within. Place the seed exactly where you want the flowers to grow inside the ditch after leveling the soil there. Gently pat down the seeds after covering them with a quarter-inch of potting soil. Till the seeds sprout, mist the bed twice daily.

* To avoid fungus, water zinnias at ground level. Depending on the weather, water them deeply once or twice a week once they are 3 to 4 inches tall. Zinnias prefer slightly drier soil than most plants, but they are not drought-tolerant. It shouldn’t always be raining on the soil.

* Reduce irrigation if the month of June is cloudy. This will stop fungal illnesses. Once July’s warmer days arrive, fungal issues should go away.