Over-watered Giant onion will develop yellow leaves. It is normal for yellow leaves to develop when Giant onion has reached the end of their blooming period. However, if the leaves turn yellow before the flowers have bloomed, it is a sign of over watering. If you water your Giant onion too much, then try to ensure there is adequate drainage and do not give it any more water for a couple of days. You can mix some sawdust into the soil to absorb the moisture. If the situation continues to deteriorate after controlled watering, consider whether the seedpods have rotted. Try digging them up and checking whether they have changed color and become soft. Once you find severe decay, then you should promptly clean out these seedpods. Under-watered Giant onion actually looks similar to over-watered Giant onion with their yellow leaves. However, the stems will also droop and leaves will look smaller and will curl. You may also see some brown patches appear. If you have given your Giant onion too little water, then do not panic. It has a level of drought tolerance. Once you have realised, give it a good drink but do not saturate the surrounding soil. Just make sure it is moist.But do not give them too much and overwater them, you just need to let the soil to be mosit. Extended periods in water can lead to root rot and fungus growing on the bulb. The fungus can cause serious damage to the bulb which is noticed through spots that appear on the leaves and buds. The tips of the leaves may also discolor and die.

It very much depends on the location and the current growth state of your Giant onion. Once you have planted your Giant onion, water them well once and then leave them. That initial watering will kick start their growth, but after that you can leave them be until you see shoots appear. If your Giant onion is in a pot, you will need to water them when the top 1-2inch feels dry. Container plants can dry out faster than bedded plants, so ensure that the soil is damp. If your Giant onion is planted outside in flower beds and borders, they will not require additional water if it has rained during the week. The Giant onion has some drought resistance, slight dryness can be recovered quickly after watering, but excessive watering can directly cause the plant to die once the seed ball rots, you need to stay cautious about how often you water the plant.

When your Giant onion is growing, you will need to water about once a week. As the temperature rises, the soil will dry out faster and you will need to increase the frequency of watering. A dry soil environment will be more friendly to your Giant onion than an excessively wet soil environment. Giant onion will become dormant during summer and the above-ground parts will completely dry up and die after dormancy,. if you planted it outdoors, you shouldn't need to water it. Moreover, if there's plenty of rain in your region, you should consider digging them out to protect the buds from rot due to too much water. If you planted it in pots, you should stop watering your Giant onion completely after the dormant part dries out. After the above-ground part dries out completely, dig up the buds and store them in a cool location or stop watering them completely to keep the soil dry. Resume watering until the next sowing season. Or keep them in the soil in a cool location until the next growing season.

Monitor your containers for moisture, moving them to a sheltered position if they become sodden or waterlogged. Allow them to dry out and return them when the weather improves. Outdoor planting often takes rainwater into account, and when planting, you should consider planting the plants in well-drained soil to avoid waterlogging and decay. Whether grown indoors or outdoors,before the buds grow out after planting the bulbs, they need very little water and you should try to let the soil dry out completely before watering in small amounts, which will effectively avoid bulb rot. You should wait to water them regularly until they grow new shoots. Your Giant onion is more susceptible to rot indoors in low light and poor ventilation. Therefore, you need to be careful when watering indoors and make sure that a lot of the soil is dry before watering. If you can keep it moist for a long time indoors, you also need to consider if your Giant onion is in an unsuitable location. Whereas outdoors, good ventilation and plenty of light will be relatively safe.

Pruning your Giant onion is a fairly simple process. First, you will need a reliable set of hand pruners or hedge trimmers. You may use a clean pair of sharp scissors if you don’t have pruners or garden shears on hand. It’s important to always clean your gardening tools before and after using them to prevent the possibility of spreading disease or infection to other plants. To prune your Giant onion simply allow your plant to go dormant over the Winter. Some time between late winter and early spring – or when new growth starts to appear – take your clean pruners or trimmers and cut away any dying, damaged, yellow or declining foliage. Repeat this process until you reach the base of the plant or until there are no dead pieces left to cut. When pruning, be careful not to damage the new growth that may be emerging near the base of your plant. These parts cannot be restored and pruning can increase the ventilation of the plants and facilitate their growth. Any pruning that is done to this plant should be cut straight across the blades or stems. No angled cuts are required. Diseased leaf blade foliage can be removed as it appears. This could be done anytime when your Giant onion is growing.

Once you’ve pruned your plant, you should dispose of the stems and leaves either by composting the healthy ones or throwing out the diseased parts. You can also fertilize just before or after pruning, which gives Giant onion a little vitamin boost that can provide it the nutrients needed to better protect itself from any nearby pathogens or diseases. Do not water the Giant onion immediately after pruning as this can lead to fungal infestation of the plants through the wounds. You don’t need much after care when you’re done pruning. It might benefit from light watering and some liquid plant food to encourage new growth.

Early spring and late winter are the best times to prune your Giant onion on a large scale. If you want to control the size of your Giant onion, you can prune them as you wish, but be careful not to prune more than a third of the size of the plant. Yellow and diseased leaves may appear during the summer months when the Giant onion is growing vigorously and these types of leaves need to be pruned back immediately. These parts of the Giant onion cannot be restored and pruning increases the ventilation of the plant and facilitates its growth.

Strategic pruning is usually done at different times of the year or during certain stages of growth depending on the plant. However, knowing when to prune your Giant onion depends on where you live and how established your plant is. For example, if your Giant onion is a new resident, it’s a good idea to wait until the plant starts to grow back before you start pruning. On the other hand, if your plant is already established, you will want to prune the dry or dead parts in plant before new leafy growth appears in early spring or late winter. This is the time of year when plants are dormant and pruning causes the least damage to them. This is also the best time of year to do more extensive pruning. It’s important to note that if Giant onion is pruned too late in the season, it can leave new growth at risk for damage or disease. However, if your Giant onion is indoors this is not a problem and you can prune at any time. Since this can affect the long-term health and appearance of your plant, it’s important to keep this in mind when deciding when and how to prune. As your Giant onion grows larger over time, you can trim it as needed after annual pruning. Dead, damaged, or diseased leaf blade foliage can be removed as it appears. This could be done anytime when your Giant onion is growing.

Giant onion needs full sun every day, and these plants rely on a minimum of six hours of sunlight to keep their leaves, roots, and blooms in a healthy state. Even though most perennials need six hours of sunlight a day, plants like the Orange Daylily or Giant Coreopsis could live off less sun for a minimum of three hours daily. Even though these perennial flowering plants can live with only three hours of direct sunlight, they won't be able to thrive like they would in sunnier conditions.

The few Perennial Flowering Plants that don't like excessive heat in warm climates might react poorly to too much sun if they have heat damage. These plants may wilt or dry out from too much sun and may also develop growth issues if they're regularly in the sun during the most intense heat of the day. Some plants don't need protection from the light afternoon sun, but those that are harmed by intense afternoon exposure should be provided some shade in warmer climates. Gardeners could give these plants plenty of shade by planting them in spots that don't receive direct heat during the afternoon, like under trees or behind bushes.

While many perennial plants need plenty of sun to bloom to their fullest extent, some of them benefit from less sun in warmer climates. For example, people who live in hotter climates might want to provide shade for their flowering perennials in the hot afternoon sun, and this is even more true for months in the summer. Even though some perennial flowering plants will benefit from partially shaded in the hottest climates, plants like the Giant Coreopsis aren't intimidated by too much sun. They might sit outside in the full sun in hot weather and still thrive.

If you're growing Giant onion and you aren't getting enough sunlight, you'll notice signs of inadequate requirements in your plants. Most plants won't produce as many blooms as they would if they had full sun exposure. Some plants will develop dry spots on their leaves, but most of these plants will still bloom in the inadequate sun. Even though they bloom, the flowers will be smaller and less full.

Giant onion is great flowers in gardens and will have optimum blooming if it gets six hours of sunlight a day minimum. Sometimes, flowers stay fresh longer if they're partially shaded during the really hot parts of the day. When Giant onion is young, gardeners want to ensure their younger plants are getting plenty of sunlight but don't have to endure intense heat during the afternoon sunlight. If you have a fully mature plant, provide it with plenty of sun so it may keep up its growth properly.

Giant onion will need a minimum of six hours of light to best support their photosynthesis cycles. These flowering plants need the sun to help their foliage and blooms grow. However, certain perennial flowering plants like the Giant Coreopsis might need anywhere from eight to twelve hours of full sun a day to maintain their large flowers and healthy foliage.

If you want your Giant onion to grow healthy and bloom as much as possible during its blooming season, you should try to give your plant six hours of direct sunlight. Some perennial plants might even do more sunlight and could sit in the sun for up to twelve hours, depending on the heat in the area and the general environment. Plants like the Red Hot Poker and Giant Coreopsis thrive in much hotter climates and might sit in all types of strong sunlight. Some home gardeners have to use grow lights because their spaces don't allow for tons of outdoor sunlight. Most perennials could grow happily in grow lights, but they will need anywhere from eight to fourteen hours of artificial light to stay strong since these lights don't have as much power as the sun.

The best temperature for Giant onion depends on the time of year. There are two primary seasons to discuss for temperature: the growing season, and the dormancy season. During the growing season, once Giant onion has begun to sprout, the ideal temperature range should be anywhere from 65~80℉(18~27℃). Any colder than 15℉(-10℃), and the plant will suffer; its leaves may brown and wilt, but if this is a short cold snap, then Giant onion may be able to survive with some help. During the warmer parts of the year, Giant onion will need to be similarly protected from temperatures that are too high. 95-105℉ (35-40℃) is the top of this plant’s temperature range, and anything above that will compromise the integrity of the foliage and blooms of Giant onion. Hotter temperatures can cause wilting, drooping, and even sunburn on the leaves, which can be difficult for Giant onion to recover from. There are quite a few ways to combat this issue that are quick and easy!

If this is the first year of your Giant onion outside as a new plant, then it may need a little extra tending during the coldest months of the year. Not only can frost more severely damage a first-year Giant onion, but it can also prevent it from growing back as a healthy plant come spring. This plant needs to be kept at 40℉(5℃) or above when they’re not yet established, which can be done either by bringing your Giant onion inside for a month or two, or putting up mulch or fabric barriers that protect from frost damage. It’s also a good idea to plant Giant onion in a shadier spot during the first year or two, as smaller and weaker plants have a more difficult time maintaining their own temperatures in the heat. First-year Giant onion should receive no more than five hours of direct sunlight per day, particularly if the ambient daytime temperature gets above 80℉(27℃). Shadecloth and frequent watering or misting are the keys to summer heat control.

If cold temperatures (below 15℉(-10℃)) do occur during the growing season, there are a few measures you can take to help protect Giant onion from frost or cold damage. If you’re growing Giant onion in a container, then the container can simply be brought inside in bright, indirect light until the temperatures rise up over the lower threshold again. Another option that’s better suited for ground-planted Giant onion is to use mulch or horticultural fabric to create an insulated barrier around the plant, which will protect the plant from frost and cold wind. For temperatures that are hotter than 80℉(27℃) in the shade during the day, be careful to only expose Giant onion to six hours or less of sunlight per day, preferably in the morning hours. Putting up shade cloth, or a fine plastic mesh, can help reduce the amount of direct sunlight that hits the plant during the hottest parts of the day. You can also install a misting system that allows for a slow release of cooling mist around the base of the plant during the day to lower ground temperatures.

During the cold winter months, Giant onion needs a certain measure of cold in order to stay in dormancy until it’s time to sprout. Sprouting too early, that is before the danger of the last frost has passed, can be fatal to Giant onion, especially if it’s already had a head start when the frost hits. Winter temperatures should ideally stay below 32℉(0℃), but if they get up to 40℉(5℃), everything will be just fine. An unexpected warm spell during the cold months, which can happen in more temperate climates like woodland rainforests, can trigger a premature sprout from Giant onion. In this case, if there’s still imminent danger of frost, you may want to try covering it with clear plastic on stakes so that the cold has less of a chance of damaging the new sprout. This setup can be removed when the danger of frost has passed. Occasionally, Giant onion will be able to resprout at the correct time without any help, but this method increases the chances of a successful second sprouting.

You need to fertilize a Giant onion for a few important reasons. The most obvious of these reasons is that fertilizer will help your Giant onion produce lovely blooms. Fertilizing in early spring is one of the best ways to ensure that your Giant onion has excellent flowers during that season. Fertilizer also gives your Giant onion plenty of energy that it can store in the ground during its dormant growth phases. Giving your Giant onion some extra nutrients during the fall planting process or during the late spring will help your Giant onion hold more energy to use once active growth resumes.

There are a few times during which it is a good idea to fertilize a Giant onion. The main time to fertilize is in early spring when the flowers are forming, at which time, the right fertilizer will encourage better blooms. You can also fertilize your Giant onion later in the spring after the flowers have faded. Feeding at this time will give your Giant onion plenty of energy that it can store and use next year. If you are planting your Giant onion for the first time in the fall you can also provide some fertilizer at that time as well. Fertilizing during the planting process gives your Giant onion the best chance of producing a healthy set of flowers during its first growing season.

The correct times to fertilize a Giant onion are during the fall planting process, during the early spring bloom period, and during the late spring following the bloom period. Fertilizing during any other part of the year is not necessary and may be harmful to your plant. When caring for a Giant onion, you should know that it has a considerable dormant phase in which it will not need fertilizer and will need far less water as well. As you would guess, your Giant onion will be dormant during winter. However, this plant also enters a dormant phase during the summer. After the flowers fade, the leaves will persist briefly before dying back to the ground. Once the leaves die back, your plant has returned to a dormant phase, and it will not need fertilizer.

Several different types of fertilizer can be beneficial to Giant onion. To keep matters simple, you can always rely on a balanced fertilizer that has equal amounts of nitrogen, phosphorus, and potassium. Fertilizer ratios that are equal, such as 10-10-10 or 5-5-5, will work well. It is also often best to use a granular fertilizer rather than a liquid one. If you are interested in being a bit more specific with your fertilizer choices, you should consider using a fertilizer that is rich overall with the three main nutrients but a bit higher in phosphorus content. Many gardeners stand by the claim that phosphorus will encourage better flowers that last longer. Organic materials, including bonemeal, can help add the phosphorus that may benefit your Giant onion and its blooming abilities.

The first time that you should fertilize your Giant onion is during the planting process, which takes place in the fall. After digging a small hole to plant your bulb, you can add some granular slow-release fertilizer to the hole. During the process, you should water continually to maintain consistent soil moisture. Following planting, you can fertilize once again during the early spring as the plant is emerging from the ground and developing its flowers. Again, you should use a granular fertilizer that has a balanced mix of nutrients and sprinkle it on the ground. As you apply the fertilizer, you should be sure to water the soil gently at the same time.

While fertilizer can be incredibly helpful to a Giant onion, it can also be equally harmful if you give too much. Overfertilization will not only damage a Giant onion, but it may lead to death in some cases. The best way to avoid this is to follow the instructions on the fertilizer package you buy rather than exceeding the recommended dose in hopes of making a more vigorous plant. Likewise, it is typically less likely that you'll overfertilize your Giant onion if you use a slow-release granular fertilizer. Since these fertilizers release their nutrients slowly, as the name implies, they are less capable of giving your Giant onion too much fertilizer at once.