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.
The greatest places to plant zinnias?
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.
Do zinnias thrive in containers?
Zinnias provide color to any flower garden, are excellent for cutting, are simple to cultivate from seeds, and are a terrific option for container gardening.
Which fertilizer works best for zinnias?
The appearance and type of zinnias, which come in single and double flowers and grow from eight inches to four feet tall, vary widely. There are zinnias with flowers that resemble dahlias, cacti, beehives, and buttons.
The flowers come in a variety of hues, including white, yellow, pink, red, lavender, and green. The lovely plants are preferred because they attract butterflies, which are important for garden pollination. No matter what variety of zinnia you cultivate, it will require a position with full sun because it will encourage the plant to blossom more and develop healthily.
Instead of heavy, deep garden soil or clay soils, zinnias require well-drained soil. Turning and loosening the soil in the bed where you intend to plant zinnias, adding compost to increase organic matter and peat moss and sand for drainage are all necessary soil preparation steps.
Planting Zinnias
The majority of the time, zinnias are sown as seeds outside because they thrive in warm climates and bloom for a long period of time throughout the growing season. After the last date of frost, they can be planted in the ground or in the garden.
Additionally, you can grow zinnias indoors from seed by sowing them in flats or a seed-starting medium four to six weeks prior to the last anticipated date of frost. Keep them at a temperature of between 75 and 80 degrees Fahrenheit and under artificial lighting. In 6 to 10 days, seeds ought to start to sprout.
In the spring, wait to plant seedlings outside until the weather is consistently warm because they suffer in colder climates. You won’t need to bother about saving seeds or transplanting most zinnias the following year because they typically reseed themselves pretty successfully.
Zinnia Care
Because zinnias are heavy feeders, plan to fertilize them frequently and regularly to promote lush, vibrant blooming. For the first spring planting treatment, use a balanced 10-10-10 or 6-6-6 fertilizer and apply about one pound per 100 square feet.
Zinnias will bloom well into the fall if you fertilize them, so you can apply another dose of fertilizer in the middle or late summer. All zinnia varieties benefit from deadheading, or pinching off the dead flower blossoms. If you want to encourage yours to grow into a bushy, compact form, you can also pinch off the growing tips that try to shoot upward.
Alternately, plant your zinnias closer together and nip off lower shoots to promote tall growth if you want to cultivate them with long stems for cut blooms. Regularly water zinnias to keep the soil moist, but do not overwater. In hot climes, drink more water.
Zinnia Pests & Diseases
Powdery mildew is zinnias’ most frequent issue. Make sure there is adequate airflow around the plants and that they are not too close to one another to avoid it. Since mildew prefers chilly, moist environments, water during the day rather than at night.
To avoid water sitting on leaves and stems, water carefully, directing the water into the soil at the plant’s base. Since powdery mildew is so prevalent, some zinnia producers also apply fungicide as a prophylactic measure before it appears.
Additionally, hybrid zinnia cultivars that are resistant to mildew are now available. Alternaria, often known as leaf spot, can also affect zinnias but can be avoided with enough airflow and routine deadheading. To stop the spread of disease, you should also pinch off any infected, dying, or damaged plant parts and throw them away.
Aphids and spider mites are the two insect pests that are most likely to affect zinnias. Pick them off by hand, or use a focused stream of water from a spray bottle to wash them off the pants. Do this during the day so that any leftover water quickly evaporates. Insects can be controlled with routine fertilization and watering.
Watering helps combat hot, dry weather, which fosters ideal circumstances for bug pests, while fertilizer fortifies the plant.