Despite the fact that several lily plants grow quite tall, they possess the aptitude to adjust themselves well to growing in containers. Nevertheless, it is important to choose large containers with a view to plant the bulbs at the depth necessary for them to maintain a robust growth. In addition, you need to ensure that you have sufficient supplies of superior quality potting mix to nourish the plant and help throughout till their flowering season. At the same time, you should bear in mind that all tall growing lilies are defenceless against strong winds. Therefore, growing them in a broad-based barrel or wooden tub will lessen the chances of the plants being blown over by windy conditions during winter.
Before planting a lily bulb, you should fill half of the container with commercially available, free draining potting mix or prepare your own potting mix using 8 parts of excellent barks, 2 parts of coarse or common sand (never use beach sand as it contains salt) and some fertilizer granules that are slow releasing. It is advisable that you should never use garden soil, as it will get condensed very quickly hindering the drainage. As a result, the lilies will not receive enough moisture for their roots. Have met these conditions, place the lily bulbs at a depth of about 4 inches to 6 inches (10 cm to 15 cm) in the container and fill it with the remaining potting mix. Moreover, remember to add 1 tablespoon (15 ml) of coated good quality slow-release fertilizer every spring and once again prior to the flowering season.
Take additional care of your potted lilies during the winter months. If you have frosts in your area, you need to keep the potted lilies indoors to provide them with some kind of protection, because sub-zero conditions will destroy the plants. Therefore, ensure that you keep the plants in a cool and well ventilated place receiving sufficient light - for instance, an airy cold greenhouse.
In addition, your potted lilies will also require shelter from too much rain. You should ensure that the lily bulbs that over winter in the containers are never saturated. While the soil should always be kept somewhat damp, it is very likely that exposing the plants to constant rain will result in their rotting.
When the new shoots grow to a height of about 3 inches (7.5 cm) during spring, they are ready for being exposed to direct sunlight. Asiatic lily species reproduce very fast and, hence, they will require repotting at intervals of two years.
Lilies are known to be big feeders. If you are growing lilies in containers, they will require fertilizers at regular intervals during their growing season, provided you have not mixed slow-release capsules with the potting mix before planting the bulbs. Providing the plants with a tomato-based fertilizer once in two weeks during the summer months will be beneficial for them.
If you find that the color of your potted lily plants is deep green, you can be sure that their root system is functioning efficiently and supplying adequate nutrients to the entire plants. On the contrary, if you see that the foliage is losing color, you should know that the plants are suffering from food deficiency. This is common when very large bulbs are planted in relatively smaller containers. In fact, you should replant the potted lily. However, if it is late during the season, you need to add additional fertilizer and replenish by adding some amount of new potting mix.
Similar to the lilies that are planted outdoors in a garden, providing the potted lilies with excellent drainage is of utmost importance. You should ensure that the roots do not dry out ever. At the same time, you should not confuse between the soil being moist and water-logged. However, sometimes the plants can be watered in excess. If you notice that the color of the lower leaves of your potted lilies is changing to brownish and eventually leaves fall off, you should know that the plants are suffering from some kind of problem. You may use a layer of mulch to save the stem roots just beneath the soil surface from harm.
Examine the plants closely at regular intervals to ensure that they have not been invaded by aphids. In fact, aphids carry a viral disease and casually transmit it to the plants. Therefore, you should take immediate measures to eliminate these pests the moment they appear.
Once the shoots have appeared shift the containers to a place where the temperature is between 64�F and 69�F (18�C and 21�C) as this will help them to grow robustly. Moreover, repot your lilies during the fall. Growing lilies in this manner has numerous advantages. Lilies have a very majestic appearance and growing them in containers outdoors certainly adds a direct flamboyance to the environment. You can move the containers into a shelter and outside depending on the condition, especially during high winds. You can also place the containers in your garden with a view to create an effect. After their flowering season, you can take the plants out of sight and allow them to wither away in ambiguity.
Growing plants in a glass house has several advantages. A major advantage is that the gardeners are able to regulate the environment to their desire and the requirement of the plants. Therefore, when you grow lilies in a glass house, you can provide them with the warmth as well as moisture that you want and not be at the mercy of the weather. In other words, growing lilies in a glass house can help them to start growth earlier compared to what would have occurred naturally outdoors. As a result, you are also able to extend their flowering season by growing early blooms under glass.
Moreover, growing lilies in a glass house also allows the gardener to pay attention to the plants when it is convenient for you, instead of being held up owing to very soggy soil or frozen soil and attend to them only when you have some free time. Like in the case of growing lilies in containers, you can also control their growing medium more perfectly. Above all, in a glass house, you can also grow lilies that are very tender and, therefore, risky for growing outdoors. The last mentioned advantage is of utmost importance for several growers.
Although it may seem that a glass house is ideal for growing lilies, but you should know even this is not problem free. In fact, lilies require a lot of aftercare. They need plenty of attention both in terms of watering and feeding. The greatest downside of growing lilies in a glass house is that even the pests as well as diseases prefer the perfect indoor conditions and grow rapidly, thereby making it quite tricky to check them. What is worse is the fact that several pests and diseases that may not assault lilies outdoors may occur in a glass house.
Therefore, the easiest means of growing lilies in a glass house is to raise them in containers. This enables you to move the plants as and when needed, while taking advantage of controlling the environment indoor. During the winter months, you can keep the temperature inside the glass house just a little higher that the freezing point. Then again, if you want early flowering, you can increase the temperature to a propos 45�F (8�C). On the other hand, you have to keep the glass house cool during the summer months and this is some problem. Therefore, you should provide the plants with necessary ventilation. At the same time, you need to provide the plants with adequate shelter by either using nets or slats. Alternatively, you can also use a shading compound or paint the exterior of the glass house white.
In fact, when the water drizzled on the central path evaporates it will also keep the glass house cool during summer months. You can also move the containers outdoors during the summer months, provided they are not very heavy or you lack place for keeping them in the open. Moving the containers into open air will help the lilies to get the benefits of being in the natural environment. However, you should never put your lilies outdoors if there is any forecast regarding heavy rainstorm in your area.
Although raising lilies in pots in a glass house has several advantages, it is not essential that they should strictly be confined to their containers. If at all possible, sometimes it is also preferable that you raise the lilies in especially arranged beds inside the glass house. For instance, stoloniferous lilies whose roots move under the soil have a preference for this method of growing lilies. You can excavate the bed from the glass house floor or built up from the floor as a raised bed. However, you need to ensure that you are using the same soil that you use for growing lilies in containers. Moreover, all other treatments should also basically be similar. When you have a large soil volume, the bed will usually not dry up very fast.
Irrespective of the lily bulbs being planted in containers or in beds inside a glass house, you can always plant them either in autumn or in mid-winter and treat them as you would take care of lilies grown in containers outdoors. When growing lilies in a glass house, you need to be very watchful to see if pests or diseases are assaulting your plants. This is of great importance for growers raising their lilies in a glass house because if the pests or diseases manage to enter the enclosed zone, they can multiply and spread rapidly devastating your plants in no time.