Additionally, you may grow these lovely blooms indoors in pots during the winter to brighten the gloomier months. Shorter kinds are preferable because tall zinnias won’t thrive in pots. The hybrid bedding zinnias are good choices for pots.
What are zinnias used for in the winter?
Zinnia is relatively simple to grow, but there are a few guidelines that should be followed to have the most gorgeous blooms.
- regular irrigation during hot weather or extended dry spells.
- In order to prevent things like powdery mildew, water in the evening without misting the leaves.
- As the plant develops, adding fertilizer will lengthen the flowering period and result in gorgeous flowers.
- To increase flower-bearing, it is possible to frequently remove wilted blooms (deadheading).
After the first frost spells, zinnia must be pulled out and placed in the compost since it will die if it freezes. But first, shake the plant seeds off so they fall to the ground, then cover them with a covering of dried leaves. They will almost certainly self-sow each year.
What time of year do zinnias bloom?
After the final frost has passed and the soil is warm, plant zinnias in the spring. You can direct-sow into warm soil, plant purchased plants outside, or start seeds indoors in separate containers. Plant seeds 3 inches (8 cm) apart and about a half inch (1 cm) deep in the soil.
When may zinnias be planted?
A: Last year around this time, I brought several annual plants indoors, including geraniums, ivy geraniums, a lovely lantana, a sun fuchsia, and a begonia called “Dragon Wing.” All performed admirably this year and helped me save a ton of money. They occupy so much room in the house, which is a concern. Can I simply leave all of these plants inside my unheated garage for the winter? There is some light coming in through a few windows, but January is still quite cold there. Do you know which of these “annuals” can withstand colder temperatures than others?
A few supposedly annual plants dormantize throughout the winter and can live in an unheated garage. With ‘Black and Blue’ salvia, geraniums, and agapanthus, I’ve done that myself.
I keep the plants in their containers, relocate the containers to the garage, and trim the foliage once it becomes brown. About twice during the winter, I give them a tiny bit of water—just enough to prevent the roots from drying out completely, but not enough to encourage new growth. Light is not required.
Although my garage certainly experiences below-freezing temps, these more cold-tolerant species have never died from the cold. To be on the safe side, store the pots against a heated wall or, at the very least, away from the garage door, which is likely the coldest place.
With some other annuals, including lantana, dusty miller, and salvia, which can withstand at least a little frost, you can definitely get away with it. Even dusty millers have spent the last two winters outside in the ground.
However, the majority of “annuals” are either 1. warm-climate perennials that will perish at or just before the first frost, or 2. “True” annuals that will perish at the end of the first year after setting seed.
If you keep species like begonias, coleus, fuchsia, Persian shield, and the majority of houseplants above freezing, they can survive the winter. When the temperature falls below 40, some begin to experience problems. Therefore, bring them indoors during the next few weeks.
Even if you try to milk true annuals like vinca, zinnias, and marigolds through the winter, they will eventually die.
Take the most delicate plants that you truly don’t want to risk losing indoors if you don’t have enough room, and keep the remaining plants in pots, soil, or the garage. I believe there is a strong probability that many species would survive, especially with a warm winter like the one we experienced last year.
Taking cuttings later in the season allows me to store smaller “babies” throughout the winter rather than full-sized plants, which helps me conserve space on the more delicate plants.
In winter, can zinnias be grown inside?
Make sure there is enough room and airflow around your potted zinnias. This aids in preventing the growth of the white powdery mildew that zinnias are prone to.
In the flower garden, zinnias are a well-liked annual. If you plant zinnias in a greenhouse or under fluorescent grow lights, you can grow them indoors. To prevent the pots from tipping over when the top growth’s mass exceeds the sum of the masses of the pot and its soil, pick one of the numerous shorter zinnia kinds. If you take off the wilted flowers, zinnias can stay alive for months indoors.
Get the growth containers ready. Indoor potting soil with fertilizer should be poured into 6- to 8-inch pots to within an inch of the top. To settle the dirt, tap the pots’ bottoms on a solid surface.
- In the flower garden, zinnias are a well-liked annual.
- Indoor potting soil with fertilizer should be poured into 6- to 8-inch pots to within an inch of the top.
A large shallow container should be half-filled with water. The shallow container should be filled with the seed-planting pots. Remove from water and let drain when the soil surface in these pots appears damp. To keep the soil moist until the seeds sprout, mist it every day.
Place the pots beneath a light source. As soon as seeds begin to sprout, or after around 10 days, grow lights. As the plants grow, give them a way to be raised so they are always approximately 3 to 4 inches over the tops of the plants. As an alternative, zinnias can be grown in a heated greenhouse.
- In each pot, plant three to four seeds.
- Once the seeds have germination, which takes around 10 days, place the containers under fluorescent grow lights.
Thin plants to the strongest seedling in each container once they have developed their third set of leaves.
Water the seedlings when the soil looks dry on top after keeping them generally moist until they are well-established. After watering, don’t let the water that drains out of the pots’ bottoms sit in the pots.
How are zinnias preserved over the winter?
Taking cuttings from your existing plants is another approach to overwinter annuals and the only practical method for true annuals. For delicate perennials like coleus and begonia that do not adapt well to transplanting, this may also be the best method.
Take a Cutting
Take 3- to 5-inch cuttings from plants that are actively developing in the middle to end of the summer. (Some plants can still be pruned into mid-fall.) Take the cuttings from non-flowering shoots if at all possible. If you must remove them from flowering shoots, remove any blooms or buds from each cutting by cutting or pinching them off. The cutting will be able to focus its efforts on growing roots as a result.
Root the Cutting
Each cutting should have the lower half of its leaves removed. The bottom third of the stem should then be inserted into a pot of moist potting soil. Although most cuttings will root without it, you can dip the cut end in rooting hormone if you choose.
Gardening Tip
If the cuttings are merely suspended in a glass of water until a strong root system forms, some plants will root rather successfully. Plants that readily take root in this manner include begonia, coleus, and impatiens. However, when roots are grown using this procedure and then moved to potting soil, they occasionally may not adapt well. The preferable technique, in the opinion of many, is to root plants in potting soil from the start.
Cover the Cutting
To keep the plastic off the plant, place a plastic bag over the pot and support it with skewers, twigs, or stakes. Set the pot somewhere where there is a lot of bright indirect light, but preferably not in the sun.
Wait for Roots
Keep an eye on the covered pot. Maintain the potting soil at a light mist but avoid saturation. Open the plastic briefly to let the moisture escape if condensation forms on it. The cuttings should root in three to four weeks. If you pull on the cutting and it resists your pressure, the root system has established. The pot can then be placed in a sunny window or under grow lights after the plastic bag has been removed. To continue developing the rooted cutting, you can transfer it into a bigger pot.
Care for the Plant
As with any indoor plant, care for your overwintering plants. Make sure they receive adequate light, water them in accordance with the needs of their species, and keep a watch out for any insect or disease issues. Typically, they won’t require food throughout the winter. However, if you’d like, you can begin providing them with a liquid meal, like vermicompost tea, in the late winter or early spring.
Move the Plant Back Outdoors
Give your newly rooted plants some time to adjust to outside conditions before relocating them there permanently when it’s time to relocate them back outside. Move the pot outside each day for an increasing number of hours after the threat of frost has passed. Spend at least a week doing this. After that, you have two options: either keep your plants in their outside containers or grow them in your garden.
Gathering seeds from your garden annuals and starting them indoors throughout the winter is another way to “overwinter.” This procedure has varying degrees of success because some hybrid plants do not “come true” when their seeds are sown because their seeds have a different genetic makeup than the parent plant. Other delicate perennials develop so slowly that starting them from collected seeds would not be practical. However, certain popular genuine annuals, like zinnias and snapdragons, are relatively simple to multiply in this manner. Simply keep the small seeds from flower heads that have finished maturing and collect them to plant indoors in potting soil or seed starter soil about two months before the last winter or spring frost. These species grow so quickly that it’s simple to create a nice crop of seedling plants to put outside in the spring.
Do zinnias bloom all year long?
In general, zinnias are simple to maintain in the garden. For some zinnia kinds, sowing the seeds directly in the garden can result in flowers in as little as 50–60 days!
Season
Since zinnias are Summer annuals, warm weather is usually when they grow and bloom. In actuality, zinnias will not thrive in temperatures lower than 60 °F. Temperatures of at least 70°F are preferred by them. These Mexican natives do not do well in the cool, wet circumstances of spring. Sadly, if they fall victim to a severe frost, they will perish.
Location
Plant zinnias in direct sunlight. In order for the plants to obtain full sun exposure, they must be exposed to the sun for at least 6 to 8 hours each day. Without enough sunlight, plants can stretch out and become spindly, or they can fail to produce healthy flowers.
Soil
Although zinnias do not have a particular preference for soil, plants do perform best in well-draining soil. The ideal soil type is rarely more crucial than planting in full sun. However, because of potential disease issues, waterlogged soils that do not frequently dry out will be a problem. A heavy clay soil’s drainage properties will be enhanced by adding organic matter, such as compost. If your site is too wet, you can also decide to plant zinnias in a raised bed.
Moisture
Once established, zinnias are fairly drought-tolerant, but it’s crucial that the young plants get enough moisture. According to basic guidelines, your zinnias will be able to grow with 1 inch of water every week. If there hasn’t been any rain, you should water your plants at least twice a week in sandy soils. If your soil contains a lot of clay, once per week should be plenty.
If the soil is damp, don’t water it, but be sure to check that it isn’t only the surface by inserting your finger a few inches into the soil. To lessen the likelihood of disease, water your plants at the root. Mulching will assist retain moisture around your plants so you may water them less frequently.
Fertilizing Zinnias
Zinnias have a medium appetite. Whether I fertilize or not, these are among the easiest flowers to grow in my yard. However, before planting or while the plants are growing, fertilizing zinnias with a well-balanced fertilizer is advantageous. Nitrogen, phosphorus, and potassium are the three macronutrients that make up a well-balanced fertilizer.
During the preparation of your bed, you can also decide to add organic materials like compost or manure or granular fertilizer to the soil.
However, since you won’t be turning the soil, you won’t be significantly amending the bed if you let zinnias self-seed. However, you might scatter fertilizer over the soil in the spring or use a watering can, irrigation tape, or tubing to administer a liquid fertilizer.
To help plants grow, you can feed them with foliar fertilizer while they are still growing. Foliar fertilizers are fertilizers that are sprayed onto plant leaves after being diluted with water so that the plant can absorb them. Plants can frequently be safely treated with a blend of fish emulsion, seaweed, or compost tea. This can also be applied straight to the plant’s root zone’s soil.
Make sure not to spray plants with foliar fertilizers during the hottest part of the day as this will burn them. In order to give the plant ample time to absorb the nutrients and to prevent burning from the sun’s direct rays, many growers prefer to apply foliar fertilizers in the evening.
Before using any fertilizer on your plants, whether or not it bears the label “organic,” do your study.
Thinning
It’s crucial to thin out your zinnia seedlings so that each plant has enough room to grow. You must ensure that plants are thinned to at least 6 to 12 inches apart for small types and between 9 and 18 inches apart for large variations, depending on the variety.
If you want your zinnias to self-seed in your garden, you must first thin them out. Frequently, zinnia seeds will fall in a clump, causing numerous seedlings to emerge at once in the same location. Due to their need for specific amounts of space, light, water, and nutrients, these plants won’t survive if they are all permitted to grow to any size.
Pinching
Make sure to pinch zinnia seedlings when they are 3 to 4 sets of true leaves and at least 6 to 8 inches tall. Pinching encourages the main stem to branch, which will result in more flower blooms on a given plant. Just above a row of leaves, pinch off the top of the plant.
Deadheading
Deadheading is necessary to encourage the growth of fresh flowers on any flowering plants. Zinnias are known as “cut-and-come-again flowers” in the field of cut flowers. This implies that the more flowers you remove from the plant, the more branches it will send out and new flower blooms it will produce. Because of this quality, zinnias are a popular Summer flower.
You can cut the flower stem off just above a group of leaves as the petals start to fade by becoming brown or shriveling. Just above the initial set of leaves, make careful to make a deeper cut into the plant. Just a few nodes should be removed to maintain the plant’s form. Nodes are the intersections of the leaves and stem.
To lessen the spread of illness, always use a pair of clean snippers when pinching, trimming, or deadheading a plant.