Do you desire lovely, full zinnia plants that are covered in flowers? The trick is to pinch. Zinnias respond to “pinching or cutting down some stems while the plant is young by producing additional stems, which results in more buds and blooms. Once you understand how it functions, you’ll want to include pinching in your summertime plant maintenance.
Should I remove the zinnia seeds I have?
An armful of zinnias are the epitome of the summer. These cheerful blossoms, which come in a vibrant spectrum of colors, are a must-grow for any flower enthusiast.
Since they are among the simplest cut flowers to raise, they make an excellent first crop for new growers and are a consistent, prolific performer for the majority of flower farms and gardeners.
Since the beginning, we’ve grown zinnias, and each year, I fall more and more in love with them.
Because they dislike the cold, zinnias prefer to be planted once it has warmed up a little. However, in chilly Washington, we start our plants in 72-cell trays in the greenhouse 4 to 6 weeks before our last spring frost. Many gardeners in warmer regions of the world are successful at direct seeding their zinnias out into the field.
Around the middle of May, after the weather has sufficiently warmed up and any threat of frost has passed, plants are tucked into the field. On our farm, we work to give each blossom the greatest possible start. Find out more about preparing the soil here.
After preparing the planting beds, we install four drip irrigation lines that are spaced about a foot (30.5 cm) apart, and we then cover the beds with a layer of pre-burned landscape cloth to keep weeds at bay. With five rows per bed, plants are spaced 9 inches (23 cm) apart.
Plants can grow enormously large and require some sort of support if given suitable soil and a consistent supply of water. We employ a layer of horizontally stretched Hortonova netting that is 12 inches (30.5 cm) above the surface. Metal hoops that we bent using our Johnny’s Quick Hoops Bender are used to hold the netting in place. Any stake, whether made of wood or metal, will do. As the plants develop, they push through the netting grid and receive the support they require.
Because they prefer the heat, zinnias must be grown in full sunlight. I always grow them in cloth for the extra heat in addition to choose a sunny location.
Since they are cultivated in such rich soil, there hasn’t been a problem with disease, which I was concerned about when we first started planting zinnias this close together. Every two to three weeks, we succession sow zinnias to provide a constant supply of these lovely blossoms throughout the summer.
Pinching your zinnias when they are young is the key to getting the longest stems from them. Here is how to accomplish it: Use sharp pruners to remove the top 3 to 4 inches (8 to 10 cm) of the plant when it is between 8 and 12 inches (20 and 30 cm) tall, right above a set of leaves. This instructs the plant to grow more stems above the point of the cut, increasing both bloom production and stem length. The image up top shows pinching with a different kind of plant.
Deadhead any spent blooms if you don’t routinely pick your zinnias in order to direct the plant’s energy toward growing new blossoms rather than setting seed.
Zinnias must be selected when they are completely ripe in order to stay fresh in the vase. Use the to determine if a zinnia is ready to be harvested “Waggling test Just gently shake the stem while holding it approximately 8 inches (20 cm) down from the blossom head. The stem is not ready to be cut if it droops or bends. It is time to harvest if the stem is rigid and continues to stand upright.
Zinnias are regarded as a “Adding a few drops of bleach to their water will help clean up soiled flowers. Given that the flowers are quite sensitive to cold, do not place them in the cooler.
There are an astonishing variety of zinnias available in every imaginable size, color, and shape. Whatever your requirements, there is undoubtedly a zinnia for you.
Consider how many options there are if you’re looking for flowers in the peach-salmon color spectrum, for instance.
Giant Salmon Rose, Cinderella Peach, and Queen Lime Orange are in the top row, from left to right.
When should seedlings be pinched back?
I detest to say it, but my basil suffered from neglect last spring. I was in a panic in June due to overzealous garden planning in January and a seed-starting frenzy. There isn’t enough time to plant all the seedlings that need to be. While I focused on planting the tomato, pepper, and eggplant seedlings in the ground, the basil seedlings—some of the last plants to leave the warmth and security of my light stand indoors—were hastily deposited outside the kitchen door. The basil plants appeared to be in perfect condition for a few days. The damage was already done by the time I got a chance to think about them again. The plants had become sickly and brown, and their delicate leaves had been rendered practically burnt by the savage noonday sun. To make their transition into the outside world easier, I had done nothing.
Those basil seedlings miraculously revived, but I seriously pushed them behind by not hardening them off. Fortunately, I didn’t mistreat every single one of my young plants. Generally speaking, I’ve discovered that seedlings will grow into healthy, productive plants with a little forethought and effort, along with a vigilant eye once they’re in the ground. Furthermore, knowing that all plants struggle to develop, yield fruit, and set seed despite an occasional slip-up on the side of the gardener gives me comfort when my lofty objectives occasionally fall short.
Give seedlings a good start
It’s invigorating to plant a packet of seeds in the dead of winter since the air is filled with the scent of moist soil and spring doesn’t seem that far away. However, in reality, spring might not arrive for several months, and many plants that were grown from seeds need to be cared for indoors until it is consistently warm outside. Here, you’ll need to provide a conducive environment for them to thrive.
I cultivate seedlings on a three-tiered stand with chains-hung fluorescent lights that can be raised as the plants mature. The plants become sturdy and stocky when the lights are kept a few inches above them. Phototropism will make seedlings search for the light and make them weak and spindly in the absence of a good light source.
Start fertilizing when seedlings have one or two sets of genuine leaves. Many gardeners use a mild solution of water-soluble fertilizer like Miracle-Gro; products made from fish emulsion or seaweed are acceptable organic substitutes. In either case, consistent feedings will promote robust growth. I prefer to use a liquid fertilizer that has more phosphorus than nitrogen or potassium (phosphorus is the middle number in the N-P-K formula). The extra phosphorus encourages the growth of robust roots. My pots are placed in plastic trays so that I can fertilize and water them from below.
Pot on, pinch back, and toughen them up
Whether you purchase seedlings from a local garden center, the mail, or your own seeds, it’s likely that they will need to be potted on before you can plant them. This is especially true for crops like tomatoes and peppers that must wait until the soil has warmed up before being planted. Overcrowded, crammed roots will cause seedlings to quickly deteriorate. Move them up to bigger pots so that the development of the roots and leaves can continue. Little plants that have outgrown six-packs should be placed in three- or four-inch pots. Use your fingers or a pencil to carefully pull apart the roots of seedlings that were started on a flat. Make sure the transplants are labeled.
In ideal circumstances, seedlings develop quickly. The terminal bud of a seedling contains the plant hormone auxin, which promotes growth by loosening the bonds between cells. However, auxin inhibits the growth of a seedling’s lower lateral buds. Side shoots will sprout if you pinch out the terminal bud and remove the auxin. As a result, plants grow bushy and branching with more flowers and fruit eventually appearing. I pinch back seedlings when they are 3 to 4 inches tall and have a plentiful supply of genuine leaves. Thumb and forefinger work just as well, but you can also use scissors or pruning shears.
Manipulate your seedlings a little bit while they are developing indoors to give them more toughness. Run your hand over the small plants’ tops on a regular basis. The seedlings will be better prepared for the harsh outdoors with this brushing or stroking.
The timely art of hardening off
The process of acclimating seedlings to the environment in the garden is known as hardening off. For young plants grown indoors, cold weather, wind, rain, and bright sunlight can be harsh. Therefore, it is recommended to introduce seedlings to these conditions gradually. Most gardeners move their plants outside to a shaded area during the day and bring them inside at night in order to harden them off. This process often takes a week or two. They gradually expose the seedlings to greater durations of direct sunshine.
Trays of seedlings can be difficult to move back and forth during the day. In my experience, a cold frame is helpful for giving seedlings a protected setting in which to acclimate to the outside. For a few days, I might bring seedlings back inside at night, but after that, they stay in the cold frame, where I lower the lid to shield them from the chilly nighttime temperatures. Even if the lid is open during the day, the cold frame nevertheless shields plants from strong winds.
The secret to hardening off is discovering your own transitional areas. Locations that offer some weather protection, such as a covered porch, a shaded area at the side of the house, or beneath some bushes, are acceptable options. While you are hardening off seedlings, keep an eye on the weather and shield them from extremes like heavy rain or an out-of-season drop in nighttime temperatures.
Plant on an overcast day
The ideal day to plant seedlings in the garden is one that is overcast and dark. Better still if it’s lightly raining. However, if fair weather is predicted, stay away from setting seedlings out in the sweltering midday sun. Get an early start in the morning, or postpone it and plant a few things at dusk.
If the roots have grown to be pot-bound, carefully pry the seedling out of its pot. Peel as much of the peat pot as you can without disturbing the root ball if your seedling has been growing in one. To avoid the peat pot’s top wicking moisture away from the plant’s roots once it is buried, it is especially crucial to remove the top.
After being transplanted, provide seedlings with some shade and protection from the wind and sun for a few days. They will find temporary protection behind flipped pots or baskets, row covers, or shade cloth while roots take hold. Until they get established, water the seedlings every third day, or more frequently if the weather is exceptionally hot.
Depending on the plant, offer more protection from insect predators. For the majority of seedlings, cutworm collars are advised. Since cabbage butterflies and other moth larvae can damage cole crops, many gardeners use floating row coverings to keep the moths’ eggs from hatching.
Slugs like to hide among debris, so keep an eye out for them and clear it away. Check the bedding at night with a flashlight if you suspect slug damage, then hand-pick the offenders.
Seedlings will soon develop into large, vigorous plants. But until then, seedlings can acclimate to the unruly garden environment with a watchful eye and some loving attention.
Do my zinnia seedlings need to be thinned?
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.