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.
What month should zinnias be planted?
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.
Sow Seeds Outdoors
Zinnias are best started by planting them immediately in their outdoor final beds. Wait until spring to plant zinnia seeds since they require air and soil that are both warmer than 70 degrees Fahrenheit to grow effectively.
They should be planted in the ground at a depth of about 1/4 inch, spaced as your chosen variety requires, which can range from a few inches to a few feet. After they have sprouted, thin them out gradually to help the strongest grow. Leave enough space between mature flowers to allow air to circulate and stave against illness.
Start Seeds Indoors
Start seeds in peat and seed starting mix pots about six weeks prior to the last frost if you want to jumpstart the growing season for some early spring color. You may just plant the entire container in the ground once the soil has warmed up sufficiently for zinnias.
Maintain Proper Soil Conditions
Before planting the zinnia seeds or plants, some compost that has been mixed into the ground early in the season will offer the earth an advantage because zinnias need well-fed soil. In the first few weeks, moisture is crucial, but watch out that it doesn’t become soggy. In order to avoid issues, the soil must be well-drained.
Stagger Multiple Plantings
In order to keep zinnia flowers in bloom in the garden from spring through fall, stagger multiple plantings in the yard. Zinnias can last for up to 2 months, depending on the variety. Some cultivars produce a lot of blooms all season. Your only challenge to consistently growing zinnias all summer may be high humidity.
Water Them Properly
To maintain your zinnias blooming completely and regularly, provide them with water and sunlight. On the other side, too much water increases the risk of powdery mildew, the only disease to which zinnias are susceptible. Limit all sources of water to roughly an inch per week. Avoid spraying the foliage and flowers as much as you can, and don’t do it at all during the hottest part of the day, as you should with most plants.
Shape the Plants
Pinch the tops of the stems off of immature plants to produce lush, bushy zinnia plants. Stake the largest zinnias to prevent them from flopping over if you want to promote tall growth.
By telling the zinnia to keep producing blooms until some of them can set seed, cutting zinnias for cut flowers will also promote full growth. If you prune the stems just above the leaf or bud nodes, new stems will continue to grow and bear flowers.
Save the Seeds
You can take out and replace a zinnia plant once it has finished blooming. Let a few heirloom kinds go to seed, and be sure to save the seeds for the next year. To prevent having dead zinnias as a focal point, try to conserve seeds from plants that are nestled beneath other zinnia plants.
What depth of soil is ideal for zinnias?
According to Mbofung-Curtis, zinnia seeds can be started inside in germination trays in cooler climates; in warm climes, seeds can be directly sown into the ground after any frost has passed. Zinnia seeds need to be placed into deep, loamy soil to a depth of 1/4 inch, whether they are being planted directly in beds or in germination trays, according to the expert. “Rows should be placed 12 inches apart, and there should be around six inches between seeds or seedlings in the beds for adequate ventilation.”