Nobody actually enjoys being slim. Not because the procedure is challenging, but because it’s challenging to get rid of plants that took time to grow. Okay, you just have to move past that. To lessen competition for resources, seedlings must be trimmed. To expand and thrive, leaves and roots require space. Seedlings also require nutrition, moisture, and sunshine.
Now, each of us plants our seeds in a different container. Consequently, it is helpful to comprehend how I sow my seeds. I use individual seed trays with 12 cells each when I plant seeds. I place 1 to 3 seeds in each cell. I typically plant three seeds each cell when using seeds I’ve stored. If not, I put 1-2 seeds into each cell. I constantly have seedlings that need to be trimmed with this method.
It is typically advised to thin when utilizing the individual cell approach so that there is still one plant per cell. The spacing instructions on the seed package should be followed, though, if you use a large container to plant the seeds.
Finally, I’ll “pot up” the seedlings if there are still more than one healthy seedling per cell. I replace the leftover seeds in a bigger pot, to put it another way. I do try to keep as many healthy seedlings as I can, I must admit.
How to thin seedlings?
- the seedlings should wait until they have two sets of genuine leaves.
- Determine which seedlings to thin.
- Tall, leggy seedlings make for good trimming candidates.
- smaller-sized seedlings than the others (stunted)
- unhealthy-looking seedlings
- Cut the seedling’s stem with scissors so that it can be trimmed to soil level.
Thinning examples
The following examples were planted five weeks ago. They are all ready to be thinned because they all have at least two sets of genuine leaves.
The first instance is seedlings of the cosmos. I’ve labeled the genuine leaves and seed leaves in the image. Keep in mind that real leaves resemble an adult cosmos. There are several seedlings present in each cell. Three seedlings can be seen in a few cells. With three seedlings, we shall thin the cells. The seedlings in the cells with three are obviously growing more slowly. These are hence excellent candidates for thinning.
The second illustration is an abundance of zinnia seedlings. Low-growing zinnias include profusion. There are a few issues with the example given below. First, there are two leggy seedlings. The best seedlings to thin are those that are leggy. The second cell has four seedlings. There are too many people in this small cell. Seedlings that are crowded should be thinned.
The tall zinnia seedling is the third illustration. True, I adore zinnias. In the image below, three seedlings are developing in a small number of cells. There are too many people in this small cell. It is necessary to thin out one of the three seedlings.
The survival of the fittest method of seedling thinning ends there. I do hope you enjoyed reading it. I’m about to start potting up my seedlings.
Do zinnias require thinning?
One of the simplest gardening activities of the year might be starting zinnias from seed. Where spring arrives early, don’t directly plant zinnia seeds outside until after the final frost. The seeds should only be sown around 1/4 inch deep. Within four to seven days, seedlings will begin to emerge. To promote air circulation, which is essential for maintaining zinnias in good shape all season, thin the seedlings once they are approximately three inches tall, spacing them 6 to 18 inches apart.
In colder regions, plant seeds indoors four to six weeks prior to the typical last frost date in your region. Before you plant the plants in your garden, harden them off by leaving the trays outside for a few hours each day.
If the zinnia plants you purchase at the garden center are already the size at which the blooms bloom, you can make the transition to your garden easier by cutting the plants back by one-third. After that, relax and watch your zinnia patch develop and thrive.
How are zinnias kept bushy?
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.
How are zinnias kept at a tiny size?
Pinching young zinnias is the key to pruning them back and achieving the longest stems possible from your blossoms. The plant must be cut off at the top, just above the set of leaves, when it is between 8 and 12 inches tall. This will instruct the plant to grow additional stems from the spot where the cut was performed, leading to a more robust display of blossoms.
Another vital piece of advice is to always water your plants in the morning if you want your zinnias to grow as much as possible. The leaves of your zinnias will stay wet if you water them in the evening, making them considerably more susceptible to fungal illnesses. You can encourage the leaves to dry out in the sun by watering your plants in the morning.
The plant will require assistance after a few weeks of development if you are planting a tall variety of zinnia. Fix a stake in the ground near the plant stem and leave a few inches between the plant and stake to offer this. The plant will be able to expand in this manner.
Does zinnia pruning encourage growth?
It’s crucial to clip your zinnia blooms as they appear to ensure that they continue to grow and bloom. 12 Zinnia plants were planted by me at the start of the summer. I probably cut more than 200 to 300 zinnia blossoms from these bushes over the course of the summer. It was great to watch them develop further!
Here are a few recommendations for flower cutting:
- Make sure the bloom is prepared to be cut by inspecting the stem. Take hold of the stem above the intended cutting point and shake the flower a little. Give the stem a few more days if it feels flimsy; it has to be strong and devoid of any give.
- To cut, cut just above the leaves as seen in the image above, following the stem as closely as you can to the main stem of the plant or where it joins another stem.
My zinnias are leggy; why?
Leggy seedlings are mostly brought on by a lack of light. It may not be enough light coming through the window where you are growing your seedlings or the grow lights you are using may not be close enough to the seedling. The seedlings will become leggy either way.
This occurs as a result of how plants respond to light naturally. Plants always expand toward a source of light. The same factor that causes crooked houseplants also causes leggy seedlings. The plant strives to heighten itself in order to get closer to the light because it is too far away for it to survive as it grows in the direction of the light. An unfortunate fact is that a plant can only grow so much. The width of the stem is sacrificed in order to acquire height. You end up with lengthy, floppy seedlings as a result.
There are various reasons why leggy seedlings are a concern. First, moving seedlings outside will present challenges if they are too tall. They can’t withstand weather conditions like wind and heavy rain as well because they are thin and floppy. Second, weak seedlings have a difficult time developing into powerful plants. Thirdly, seedlings that are toppling over may be more susceptible to illness and pests.
How can I make zinnias bloom throughout the summer?
The extreme heat and dry conditions have forced many growers to scramble to tend to and harvest their stressed fields and gardens, including here on our farm in the Skagit Valley and throughout much of the Western United States. While many flowers bloom profusely in this kind of weather, it is crucial to know the optimum times to harvest and ways to care for your fresh cut blooms immediately after they are cut if you want your flowers to last as long as possible—especially with the added stress of high temperatures. (This is referred to as “stage of harvest” and “post-harvest handling” in the language of flower farmers.)
Here are some of my favorite hints for avoiding heat waves and getting the longest vase life possible from 10 high summer flower varietals.
Zinnias: To ensure a long vase life, zinnias must be harvested at the proper time. Wait too long, and the blossoms will swiftly fade; harvest too soon, and the stalks will sag and droop. A pretty simple way to tell if your zinnias are ready to harvest is simply completing the “wiggle test. Simply take hold of the stalk a few inches below the flower and gently shake it. The stem will be delicate and flexible if it is young. When you wriggle the stem, it should stay rigid and straight if the plant is ready to be harvested. Cut time has come! To create a long, sturdy stem, deeply cut the plant. Don’t be hesitant to clip off lateral sprouts on the main stem you just plucked; remove the foliage as well. Because zinnias are “cut and come again” flowers, they will continue to grow all season long even after being severely pruned.
We cut zinnias and place them directly into clean, fresh water that has either been supplemented with a drop of chlorine or a CVBn pill. The little conditioning pills, which are frequently marketed for gerber daisies, are actually ideal for all of the “dirty flowers with hairy stems that easily gather dirt and bacteria that can muddy up the water.” The hottest time of the year is when zinnias blossom continuously, and they also enjoy heat throughout the post-harvest period. One of the few flowers we don’t treat in the cooler before delivery or design work is this one. Simply said, we keep them out of direct sunlight in a dark, shaded area of our studio. These few easy steps will give you gorgeous, long-lasting blossoms that last 7–10 days in a vase.
Note: In general, certified organic agriculture does not permit the use of commercial flower food. Using bleach or hot water and harvesting at the right stage are crucial if you have certification. To give your flowers the longest possible vase life even if you are not certified organic, CVBn tablets and other hydration and conditioning options are worth the extra money.
Basil: During the height of the summer, we nearly always add at least one or two stems of Cardinal, Oriental Breeze, Lemon, or Cinnamon basil in our mixed bouquets of flowers for grocery store clients. When the flower heads start to appear and the stems start to harden, I pick the basil. To keep them from wilting, I treat them with Quick Dip (a non-organic alternative) or boiling water (an organic alternative). As these plants wilt quickly, be cautious to harvest them in the cool of the morning or evening. Basil doesn’t like the cold, just like zinnias, so keep them out of the refrigerator to finish their conditioning. The vase is frequently where stems root, and they should last 7 to 10 days.
The fuzzy, aromatic leaves of scented geraniums are a must-have for bouquets, but if you don’t take a few simple precautions, they could wilt easily. In order to avoid the heat of the day, I always attempt to trim the scented geraniums first thing in the morning. I sliced them, placed them in cool water, and gave them 3–4 hours to rest and condition before arranging them. Dip the bottom 2-3 in boiling water for 5-7 seconds or dip the stems in Quick Dip if they are still wilting.
Another flower that is prone to wilting is the hydrangea. Perhaps more significant than the harvesting stage is how you hydrate the produce after it has been sliced. My secret is to cut them when they are still chilly, use Quick Dip quick hydration solution, or cut them into hot water for organic production. I am familiar with some flower growers who swear by dipping the just-cut stems in alum powder (found in the grocery store’s spice aisle), while others would soak the entire bloom in water before use to prevent wilting.
Cosmos: Cosmos generally don’t have a very long vase life, but if you cut them at the proper point, you can extend their beauty. Cosmos should be cut when just one petal is beginning to unfold, and once that happens, let the vase’s other buds and blossoms bloom.
Sunflowers: Harvesting the blooms just as the first few petals begin to lift off of the central disk and removing all but the top few leaves will give your sunflowers the longest vase life possible. This can be challenging for beginners since it still appears to be “closed” and not ready to pick, but if you cut them early, you can prevent bug damage and enjoy longer vase life. These people, who are referred to as “dirty flowers,” may benefit from some bleach in the water or from being cut into a pail of water that has been CVBn-treated.
Celosia: When harvesting crested celosias, also known as “cock’s comb,” wait until the crests are fully grown (or a bit sooner is good too), but before the plant begins to produce seeds. Before plucking celosias with feathers, let them stretch and become feathery. Make sure to remove around 3/4 of the leaves after cutting and submerge them in cool water.
Cerinthe: Harvest during the coldest part of the day, then immediately treat stems by putting the bottom 2-3 inches in boiling water for 7–10 seconds, followed by a cool water bath. After harvest, stems become extremely floppy, but once hydrated, Cerinthe can last up to a week in a vase.
Harvest rudbeckia when the flowers start to unfold. Black Eyed Susans are infamous for fast turning their water murky. By reducing this and extending their vase life, you can expect a vase life of 7 to 10 days by adding a few drops of bleach to the water.
If you have any more advice or methods for gathering high summer blossoms and extending their vase life, please let me know. Please share any more advice in the section below.