When watering the Giant bellflower, you should aim to use filtered water that is at room temperature. Filtered water is better for this plant, as tap water can contain particles that are harmful to its health. The reason that the water should be at room temperature or slightly warmer is that the Giant bellflower comes from a warm environment, and cold water can be somewhat of a shock to its system. Also, you should avoid overhead watering for this plant, as it can cause foliage complications. Instead, simply apply your filtered room temperature water to the soil until the soil is entirely soaked. Soaking the soil can be very beneficial for this plant as it moistens the roots and helps them continue to spread through the soil and collect the nutrients they need.

Both overwatering and underwatering will be detrimental to the health of your Giant bellflower, but overwatering is a far more common issue. When this species receives too much water, its stems and leaves may begin to wilt and turn from green to yellow. Overwatering over a prolonged period may also lead to diseases such as root rot, mold, and mildew, all of which can kill your plant. Underwatering is far less common for the Giant bellflower, as this plant has decent drought tolerance. However, underwatering remains a possibility, and when it occurs, you can expect to find that the leaves of your Giant bellflower have become brittle and brown. It is crucial that you notice the signs of overwatering as soon as possible when caring for your Giant bellflower. Some of the diseases that arise from overwatering, such as root rot, may not be correctable if you wait too long. If you see early signs of overwatering, you should reduce your watering schedule immediately. You may also want to assess the quality of soil in which your Giant bellflower grows. If you find that the soil drains very poorly, you should replace it immediately with a loose, well-draining potting mix. On the other hand, if you find signs that your Giant bellflower is receiving too little water, all you need to do is water more regularly until those signs have subsided.

If your plant is in a pot. The most precise way to decide whether your Giant bellflower needs water is to plunge your finger into the soil. If you notice that the first two to three inches of soil have become dry, it is time to add some water. If you grow your Giant bellflower outdoors in the ground, you can use a similar method to test the soil. Again, when you find that the first few inches of soil have dried out, it is time to add water. During the spring and early fall, this method will often lead you to water this plant about once every week. When extremely hot weather arrives, you may need to increase your watering frequency to about twice or more per week. With that said, mature, well-established the Giant bellflower can show an admirable ability to withstand drought.

When it comes time to water your Giant bellflower, you should not be shy about how much water you give. With the first two to three inches of soil dry, this plant will appreciate a long and thorough watering. Supply enough water to soak the soil entirely. The amount of water you add should be enough to cause excess water to flow through the drainage holes at the bottom of your pot. If you don’t see excess water draining from the pot, you have likely underwatered your plant. But do not let the water accumulate inside the soil, which will be very dangerous to the plant as well. Alternatively, a lack of water draining through the pot could indicate poorly draining soils, which is detrimental to the health of this plant and should be avoided. If the plant is outside, 1 inch of rain per week will be sufficient.

The water needs of the Giant bellflower can change depending on growth stages as well. For example, when your Giant bellflower is in the first few years of its life, or if you have just transplanted it to a new growing location, you will need to give more water than usual. During both of those stages, your Giant bellflower will put a lot of energy towards sprouting new roots that will then support future growth. For those roots to perform their best, they need a bit more moisture than they would at a more mature phase. After a few seasons, your Giant bellflower will need much less water. Another growth stage in which this plant may need more water is during the bloom period. Flower development can make use of a significant amount of moisture, which is why you might need to give your Giant bellflower more water at this time.

The Giant bellflower will have its highest water needs during the hottest months of the year. During the height of summer, you may need to give this plant water more than once per week, depending on how fast the soil dries out. The opposite is true during the winter. In winter, your plant will enter a dormant phase, in which it will need far less water than usual. In fact, you may not need to water this plant at all during the winter months. However, if you do water during winter, you should not do so more than about once per month. Watering too much at this time will make it more likely that your Giant bellflower will contract a disease.

It is most common to grow the Giant bellflower indoors for any gardener that does not live in temperate and tropical regions. Those gardeners should consider the fact that soil in a container can dry out a bit faster than ground soil. Also, the presence of drying elements such as air conditioning units can cause your Giant bellflower to need water on a more frequent basis as well. if you planted it outside. When that is the case, it’s likely you won’t need to water your Giant bellflower very much at all. If you receive rainfall on a regular basis, that may be enough to keep your plant alive. Alternatively, those who grow this plant inside will need to water it more often, as allowing rainwater to soak the soil will not be an option.

Far from damaging the plant, regular pruning will actually encourage Giant bellflower to produce more blooms. There are two primary forms of pruning for Giant bellflower. The first is deadheading, which is the gardening term for removing spent flower heads once they start to wither. This concentrates the nutrients for the other flowers and allows the plant to flower better. The final process for pruning Giant bellflower is the removal of yellow and diseased leaves, which increases plant ventilation and light penetration and facilitates plant growth. When nature runs its course, Giant bellflower will bloom once, produce seed heads, and attempt to reproduce for the rest of the year. But, by consistently removing flower heads before they go to seed, you encourage the plant to continue producing more blooms for a longer flowering time. When the plant starts to wilt during the full, you should cut off the wilted part above the soil as well.

There are two primary forms of pruning for Giant bellflower. The first is deadheading, which is the gardening term for removing spent flower heads once they start to wither. This concentrates the nutrients for the other flowers and allows the plant to flower better. The final process for pruning Giant bellflower is the removal of yellow and diseased leaves, which increases plant ventilation and light penetration and facilitates plant growth. Since Giant bellflower requires two types of pruning, you’ll be trimming your plants throughout the growing season. Pinching is most effective in the early spring before the plant develops any flower buds. Removal of yellowing or diseased leaves can be done at any time during the growing season. When nature runs its course, Giant bellflower will bloom once, produce seed heads, and attempt to reproduce for the rest of the year. But, by consistently removing flower heads before they go to seed, you encourage the plant to continue producing more blooms for a longer flowering time. Finally, deadheading takes place as soon as the plants are producing full flower heads. Expect to take off spent blossoms from mid-summer through the first frosts of fall. When the plant starts to wilt during the full, you should cut off the wilted part above the soil as well.

Giant bellflower doesn’t take much special equipment for pruning. A basic pair of scissors or garden shears should do the trick. It’s a good idea to ensure they are clean before use—you can soak them for thirty minutes in a solution of one part bleach diluted in nine parts water. This reduces the risk of spreading disease lingering on contaminated equipment into your flower garden. Some gardeners avoid using tools altogether and merely pinch off the blossoms with their fingertips. That can be a faster technique, but you run a larger risk of bruising the plant stems or accidentally pulling them out of the ground completely.

Here’s an overview of pruning instructions for Giant bellflower based on which of the two types you’re completing. By completing these two types of pruning over the lifespan of your Giant bellflower, you’ll encourage them to produce bigger, better flowers for far longer than the plants would otherwise. It only takes a few minutes to complete each step of the pruning process, and you’ll reap the rewards of your efforts for weeks to come. Deadheading Deadheading is a fast, easy way to refresh your garden by removing old flowers and providing space for new ones to take their place. You can use your fingers to pop off old flower heads as soon as they look tired, although you’re less likely to damage the plant if you use shears instead. When deadheading, make sure you cut well below the flower so that you aren’t left with a long, flowerless stem sticking out in your garden bed. Instead, cut the stem to just above the point where the side stem joins the main plant. Remove yellow and diseased leaves, this increases the ventilation and light penetration of the plant and facilitates its growth. When pruning, the leaves need to be trimmed off together with the petiole. It is best to use sterilised scissors to cut them off. Note: It’s a good idea to ensure scissors or garden shears are clean before use—you can soak them for thirty minutes in a solution of one part bleach diluted in nine parts water. This reduces the risk of spreading disease lingering on contaminated equipment into your flower garden.

Giant bellflower requires about 3-6 hours of direct sunlight each day to thrive. However, it also needs some shade during the hottest parts of the day to prevent sun damage. Morning sunlight is ideal for Giant bellflower, but it can also tolerate some afternoon sun if the temperature is not too hot. To provide the perfect balance of sunlight, try planting Giant bellflower in an area that gets partial sun, such as under a tree or on the east side of a building.

If Giant bellflower is exposed to too much direct sunlight, its leaves may turn yellow, dry out, or even burn. You may also notice that the plant wilts or becomes stunted. To prevent sun damage, make sure to give Giant bellflower some shade during the hottest parts of the day. You can use a shade cloth or plant Giant bellflower near taller plants that can provide some natural shade.

If Giant bellflower doesn't get enough sunlight, it may grow tall and lanky, with sparse foliage. The leaves may also turn yellow or pale green, indicating that the plant is not producing enough chlorophyll due to lack of sunlight. To remedy this, try moving Giant bellflower to a sunnier spot, or prune nearby foliage to allow more light to reach the plant.

Giant bellflower prefers cooler weather, and has a specific temperature range you can keep it within to maximize growth. For Giant bellflower to be as healthy as it possible can, you could keep them between the temperatures 65~75℉(18~25℃). Giant bellflower can handle higher and lower heat levels, but whenever possible, try to keep the area you grow them in within several degrees of 65~75℉(18~25℃). If you can’t keep Giant bellflower precisely within that range, it doesn’t mean they will stop growing. Giant bellflower can handle a higher and lower range before they begin to suffer damage or reduced growth. On the higher end, that temperature would that would fall between 75~85℉(25~30℃). On the lower end, Giant bellflower can handle temperatures as low as 5℉(-15℃). The higher temperature range is the most important to observe, as Giant bellflower prefers cooler environments. Letting temperatures get above the upper range may cause growth to slow, and having Giant bellflower above 85℉(30℃) could result in the plant dying.

Too much heat early in the growing stages of Giant bellflower may give it an unhealthy appearance, so it's important to keep your growing space between 65~75℉(18~25℃). You’ll want to stay in the colder part of this range as Giant bellflower, but make sure not to go below -5℉(-20℃). Extremely cold temperatures can hinder growth at any stage for Giant bellflower, though they aren’t nearly as damaging as extremely hot temperatures. If temperatures are kept high during the budding stage, Giant bellflower may not flower at all.

Tip #1: Grow in the Coldest Room of Your Home If you plan to grow Giant bellflower indoors, make sure to choose the coldest room of your home. This will usually be on the side of your house that doesn’t experience the harsh heat that the sun can produce in the middle of the day. At the same time, you’ll need to ensure the room does get a healthy amount of sunlight. While you’ll want to spare your plants from the brightest and hottest part of the day, zero sunlight can drastically reduce Giant bellflower ability to grow. Tip #2: If Giant bellflower Doesn’t Flower Properly, It May Be Too Hot The growing season for Giant bellflower, spring and early summer, can occasionally come with high temperatures. These fluctuations can negatively affect the growing stage of Giant bellflower, causing flowering buds to change into non-flowering buds. These buds will open partially, or in some cases not at all, causing Giant bellflower to lose some of its aesthetic quality. It's important to stay in the range of 65~75℉(18~25℃), for that reason, so your Giant bellflower can flower to its full potential. Tip #3: Avoid Frost While Giant bellflower can tolerate lower temperatures, as low as -5℉(-20℃), it will not do well if it encounters significant frost. If left out in the colder temperatures of late fall or winter, Giant bellflower will begin to show the signs of frost damage. To recognize the signs of frost damage, you’ll look for several key aesthetic changes. First, parts of Giant bellflower will begin to wilt. Then, those sections will start to become discolored, eventually turning brown or black as they die. Any parts of Giant bellflower that turn these colors cannot be saved, and will have to be pruned if you intend to keep the plant alive.

It's important to keep the temperature of your growing area steady regardless of season. If you live in an area with harsh winters or very hot summers, it may be best to put your plants inside. That way, you can keep them in a cool room where Giant bellflower would be able to grow in the best possible conditions. If you do leave your plants outside, make sure to observe the temperature closely. If the summer’s get especially hot in your climate-zone, make sure that your plants aren’t exposed to temperatures above 85℉(30℃). This will dehydrate and damage Giant bellflower quickly, and before long, they will begin to die.

If you intend to place Giant bellflower outside, you’ll want to make sure that it has shade from the heat of the midday sun. While Giant bellflower does need plentiful sunlight to grow to its full potential, direct sunlight can cause a rise in temperature and damage certain elements of the plant. Choose an area that has shade providing structures or tall trees that can shield Giant bellflower from the hottest parts of the day. If your climate isn’t appropriate for Giant bellflower or you don’t have the proper space in your garden, you can also plant them inside. Controlling the temperature is much easier indoors, and having proper fans, ventilation, or an A/C unit will allow you to stay within the optimum range of 65~75℉(18~25℃).

Fertilization is important to the Giant bellflower for several general reasons. Mainly, fertilization helps Giant bellflower and other plants by providing key nutrients that help the plant grow both above and below ground. However, the overall fertilization needs for a Giant bellflower are relatively low. At times, a Giant bellflower may survive well without fertilization. However, annual fertilization is can be very beneficial to the Giant bellflower, as it will help keep the plant alive and may also encourage your Giant bellflower to create better flowers that last for longer. As such, those interested in helping their Giant bellflower look its best should keep up with annual fertilization.

The ideal time to fertilize a Giant bellflower is in the late winter to early spring. During that time, your Giant bellflower will be exiting its dormant phase and entering a phase of active growth. Fertilization at this time allows the plant to get off to a great start for the season by encouraging healthy growth. While it is generally most advantageous to fertilize a Giant bellflower during the early spring, it is also permissible to fertilize a Giant bellflower during the fall too. However, summer and winter remain the seasons in which it is not a good idea to feed a Giant bellflower.

You should not fertilize your Giant bellflower during any time of the year except during the late winter and early spring. The low fertilization needs of this plant allow a single annual feeding to suffice. Continuing to fertilize throughout spring, summer, and fall can easily lead to overfertilization and all of the complications that can come with it. The only exception is if you did not fertilize in spring, which means that it is permissible to feed this plant in fall. Along with refraining from fertilizing for most of the growing season, there is also no reason to fertilize this plant during the winter. In winter, the Giant bellflower will be in a dormant growth phase, meaning that it does not put forth new growth. With that being the case, fertilization during most of the winter is not advisable.

Nearly any kind of general-purpose fertilizer with a balanced amount of the three main plant nutrients will work well for a Giant bellflower. However, there are a few specific nutrient blends that can be even more beneficial. For instance, many gardeners follow the belief that higher volumes of phosphorus make for stronger roots and better flowers. Since Giant bellflower is a flowering plant, applying a phosphorus-rich fertilizer may be the best approach. You can use a fertilizer that comes in a granular form or a liquid form as long as there are plenty of nutrients present. Outside of manufactured fertilizers, you can also use more organic means to improve the soil for your Giant bellflower. Mainly, compost, manure, and similar materials can go a long way towards creating a healthy growing medium for your Giant bellflower.

The most common way to fertilize a Giant bellflower is to apply a granular or pellet fertilizer to the soil around your plant. Remember that the ideal time to fertilize is as the plant is exiting its winter dormant growth phase and entering a phase of active growth. In early spring, wait until the plant begins to send shoots through the soil, and then apply your fertilizer. Some people may choose to use a liquid fertilizer instead of a granular one. In that case, you should dilute the fertilizer with water before applying it. Regardless of whether you use granular or liquid fertilizer, it is always best to moisten the soil before, during, and after you apply fertilizer.

As you care for your Giant bellflower, recall that this plant does not need a lot of fertilizer each year and will begin to suffer if it receives too much. Firstly, any overfertilized plant runs the risk of fertilizer burn, a condition in which excessive amounts of fertilizer draw nutrients and moisture out of the plant's roots, causing its decline. Also, overfertilizing a Giant bellflower is also a way of weakening your plant and making disease far more likely. There is also a potential that overfertilization could cause your Giant bellflower to flower less or not at all, which is a significant detriment considering the blooms of this plant are what make it so valuable and sought after by so many gardeners.