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Azalea - Rhododendron

In Japan, the Azalea symbolises spring; in the same way as Maples and Pines, it is one of the most widely used essences for creating bonsai in its many varieties, as it possesses all the ideal characteristics: small, deciduous or perennial leaves, a pleasing, wrinkled trunk, a good nebari, rapid growth and above all, it is particularly suitable for pole forms. Thanks to the ease with which it sprouts in any part of the stem, even drastic pruning can be applied. Another aspect that makes it rather interesting for bonsai cultivation is that it can be shaped into almost any style.

In areas with a mild climate, azaleas can be safely placed outdoors all year round. However, in areas subject to colder temperatures, they need to be protected, for example by placing them in a cold greenhouse, at least during periods of frost. During the summer, this species tolerates the high temperatures of the hottest days quite well, although it is always best to provide shelter from direct sunlight, otherwise the leaves take on a reddish color and lose much of their shine. Furthermore, in case of excessive sun exposure, there is a risk of dehydration and failure to assimilate fertilizer, resulting in spotting on the edges of the leaves, similar to that caused by fungi. It is important to keep in mind that Azaleas also benefit from a well-ventilated location. If you want to keep it indoors for a while to fully enjoy its spectacular flowering, you can do so, provided it is for a very limited period: a maximum of 4 days.

Azaleas do not like hard water: if this problem arises, it is best to use a descaling product such as those in the Bonsan range. As for how often to water, a distinction must be made depending on the season: during the growing season, until the end of July, watering should be very abundant, while after flowering, it should be more moderate. However, it is important never to let the soil dry out completely, even in winter (including the coldest months), as its thin fibrous roots dehydrate easily. Ensuring the right amount of water for azaleas is very important in order to avoid cultivation problems: overwatering leads to weak and long growth, with consequent leaf fall; under-watering causes stunted growth, with twisted, yellow leaves that will fall, along with the buds.

The best time for transplanting is immediately after flowering, because if done earlier, the plant would weaken at the expense of flower production. Young specimens should be transplanted every 2 years, while for more mature ones, every 3 or 4 years will suffice. Azaleas tolerate root pruning well, and after the operation they generally produce numerous capillary roots in a short time. Before transplanting, remove the soil from the top and bottom of the stump, paying particular attention to the central area under the tree trunk, where it is easy to find rotting roots and dry, compact soil. At this point, prune one-third of the roots, giving priority to the thickest ones. The cuts resulting from the operation should be treated with healing mastic. The optimal compound is kanuma.

Since these are fast-growing plants, it won't take long for them to develop good branching. Before flowering, the branches must be thinned out, pruning the shoots that grow directly upwards or downwards; in an already formed plant, even the strongest shoots must be cut. When the tree is about to flower, in order to avoid excessive stress on the tree, a selection of buds is made. Every 12-13 years, to reinvigorate the plant and obtain the best possible flowering, the Japanese recommend completely removing the main branches and starting the shaping process again. When pruning, care must be taken to prune the apex less than other parts of the tree, as this is the weakest area.

This is done to help stimulate the growth of new branches and keep the bonsai's foliage compact and well-structured. This practice consists of gently removing the tips of new shoots, which are still soft. It should be done throughout the growing season, from spring to summer, but not during flowering, as the flower buds could be damaged. The operation should be carried out regularly, every 2-3 weeks, when the new shoots are still young, and consists of removing about 2-4 leaves to stimulate denser growth and reduce overly long internodes, which could compromise the shape of the bonsai.

The best time to apply the wire is after flowering because, having pruned, the structure of the tree is more visible. Copper wire is the most suitable because it is stiffer than copper-coated aluminum wire and therefore provides a better hold, especially for thick branches. To achieve good results without taking any risks with this technique, it is important to bear in mind that azalea wood is very delicate and therefore young branches should not be wrapped. One tip to keep in mind when applying the wire is to cover it with florist's tape to avoid leaving marks on the bark. You should also take care to remove it as soon as it starts to cut into the bark. For thick, vigorous branches, it is better not to use wire to shape them, but rather tie rods and weights.

At the end of flowering, after pruning, apply Bonsan Stimulating Fertilizer combined with Bonsan Liquid Organic Fertilizer three times every 8-10 days. During other periods, use Bonsan Hanagokoro Solid Organic Fertilizer every 15-25 days, excluding July and August. Twice a year (in autumn and at the end of winter), apply Bonsan Hanagokoro Solid Organic Fertilizer. It is also advisable to apply Bonsan Mineral Curative Solution 6-8 times a year. To stimulate rooting, use Bonsan Organic Mineral Liquid Fertilizer with B vitamins instead of Bonsan Organic Liquid Fertilizer.

The diseases to which azaleas are most frequently susceptible are: scale insects, aphids, mites, red spider mites, and sooty mold. To prevent these pests from attacking the plant, simply follow the correct maintenance rules, especially with regard to exposure and watering. However, if they do appear, they can be easily eradicated by applying specific products. However, to avoid having to treat the plant once it has already been attacked, it is advisable to carry out appropriate preventive treatments periodically.

Advice on:
Location

In areas with a mild climate, azaleas can be safely placed outdoors all year round. However, in areas subject to colder temperatures, they need to be protected, for example by placing them in a cold greenhouse, at least during periods of frost. During the summer, this species tolerates the high temperatures of the hottest days quite well, although it is always best to provide shelter from direct sunlight, otherwise the leaves take on a reddish color and lose much of their shine. Furthermore, in case of excessive sun exposure, there is a risk of dehydration and failure to assimilate fertilizer, resulting in spotting on the edges of the leaves, similar to that caused by fungi. It is important to keep in mind that Azaleas also benefit from a well-ventilated location. If you want to keep it indoors for a while to fully enjoy its spectacular flowering, you can do so, provided it is for a very limited period: a maximum of 4 days.

Watering

Azaleas do not like hard water: if this problem arises, it is best to use a descaling product such as those in the Bonsan range. As for how often to water, a distinction must be made depending on the season: during the growing season, until the end of July, watering should be very abundant, while after flowering, it should be more moderate. However, it is important never to let the soil dry out completely, even in winter (including the coldest months), as its thin fibrous roots dehydrate easily. Ensuring the right amount of water for azaleas is very important in order to avoid cultivation problems: overwatering leads to weak and long growth, with consequent leaf fall; under-watering causes stunted growth, with twisted, yellow leaves that will fall, along with the buds.

Repotting

The best time for transplanting is immediately after flowering, because if done earlier, the plant would weaken at the expense of flower production. Young specimens should be transplanted every 2 years, while for more mature ones, every 3 or 4 years will suffice. Azaleas tolerate root pruning well, and after the operation they generally produce numerous capillary roots in a short time. Before transplanting, remove the soil from the top and bottom of the stump, paying particular attention to the central area under the tree trunk, where it is easy to find rotting roots and dry, compact soil. At this point, prune one-third of the roots, giving priority to the thickest ones. The cuts resulting from the operation should be treated with healing mastic. The optimal compound is kanuma.

Pruning

Since these are fast-growing plants, it won't take long for them to develop good branching. Before flowering, the branches must be thinned out, pruning the shoots that grow directly upwards or downwards; in an already formed plant, even the strongest shoots must be cut. When the tree is about to flower, in order to avoid excessive stress on the tree, a selection of buds is made. Every 12-13 years, to reinvigorate the plant and obtain the best possible flowering, the Japanese recommend completely removing the main branches and starting the shaping process again. When pruning, care must be taken to prune the apex less than other parts of the tree, as this is the weakest area.

Pinching

This is done to help stimulate the growth of new branches and keep the bonsai's foliage compact and well-structured. This practice consists of gently removing the tips of new shoots, which are still soft. It should be done throughout the growing season, from spring to summer, but not during flowering, as the flower buds could be damaged. The operation should be carried out regularly, every 2-3 weeks, when the new shoots are still young, and consists of removing about 2-4 leaves to stimulate denser growth and reduce overly long internodes, which could compromise the shape of the bonsai.

Wiring

The best time to apply the wire is after flowering because, having pruned, the structure of the tree is more visible. Copper wire is the most suitable because it is stiffer than copper-coated aluminum wire and therefore provides a better hold, especially for thick branches. To achieve good results without taking any risks with this technique, it is important to bear in mind that azalea wood is very delicate and therefore young branches should not be wrapped. One tip to keep in mind when applying the wire is to cover it with florist's tape to avoid leaving marks on the bark. You should also take care to remove it as soon as it starts to cut into the bark. For thick, vigorous branches, it is better not to use wire to shape them, but rather tie rods and weights.

Fertilization

At the end of flowering, after pruning, apply Bonsan Stimulating Fertilizer combined with Bonsan Liquid Organic Fertilizer three times every 8-10 days. During other periods, use Bonsan Hanagokoro Solid Organic Fertilizer every 15-25 days, excluding July and August. Twice a year (in autumn and at the end of winter), apply Bonsan Hanagokoro Solid Organic Fertilizer. It is also advisable to apply Bonsan Mineral Curative Solution 6-8 times a year. To stimulate rooting, use Bonsan Organic Mineral Liquid Fertilizer with B vitamins instead of Bonsan Organic Liquid Fertilizer.

Care

The diseases to which azaleas are most frequently susceptible are: scale insects, aphids, mites, red spider mites, and sooty mold. To prevent these pests from attacking the plant, simply follow the correct maintenance rules, especially with regard to exposure and watering. However, if they do appear, they can be easily eradicated by applying specific products. However, to avoid having to treat the plant once it has already been attacked, it is advisable to carry out appropriate preventive treatments periodically.

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Bonsai of Azalea 48 cm | Round blue plastic pot Bonsai of Azalea 48 cm | Round blue plastic pot 2
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Available
Flower Bonsai

Rhododendron indicum Hanamaiko - Azalea - 48 cm

Azalea - Rhododendron
Y45AMO-7454
€216.36
Bonsai of Azalea characterized by its height without pot of 33 cm, and trunk size of 1-1,5 cm. The plant is grown in a round plastic pot whose dimensions are Ø19xH15 cm.
Rhododendron Indicum Laterinum - Azalea - 92,5 cm Rhododendron Indicum Laterinum - Azalea - 92,5 cm 2
Available
Masterpiece Bonsai

Rhododendron Indicum Laterinum - Azalea - 92,5 cm

Azalea - Rhododendron
Y45LOII-5561
€1,636.36
UNIQUE SPECIMEN Bonsai of Rhododendron Indicum Laterinum characterized by a height without pot of 80 cm, a trunk size of 8 and a nebari of 20 cm. Style informal upright. The plant is grown in an unglazed stoneware pot whose dimensions are 46,5 x 36 x H 12,5 cm
61 cm Azalea Bonsai | Blue oval pot 61 cm Azalea Bonsai | Blue oval pot 2
  • New
Available
Flower Bonsai

Rhododendron indicum - Azalea - 61 cm

Azalea - Rhododendron
Y45PTE-7467
€422.73
Azalea bonsai with a height (excluding the pot) of 52.5 cm, a trunk diameter of 3.5 cm and a nebari of 8 cm. The plant is grown in an oval glazed stoneware pot measuring 30 x 23 x H8.5 cm.
Bonsai of Azalea of 40 cm | Round blue plastic pot Bonsai of Azalea of 40 cm | Round blue plastic pot 2
  • New
Available
Flower Bonsai

Rhododendron indicum Hi no maru - Azalea - 40 cm

Azalea - Rhododendron
Y45ATE-7452
€240.91
Bonsai of Azalea characterized by a height without pot of 25 cm, and a trunks size of 1 cm. The plant is grown in a round plastic pot whose dimensions are Ø19xH15 cm.
70 cm Azalea Bonsai | Round brown plastic pot 70 cm Azalea Bonsai | Round brown plastic pot 2
  • New
Available
Flower Bonsai

Rhododendron indicum Monsho – Azalea – 70 cm

Azalea - Rhododendron
Y45PNE-7465
€450.00
Azalea bonsai measuring 57 cm in height (excluding the pot), with a trunk diameter of 4.5 cm and a nebari of 14 cm. The plant is grown in a round plastic pot measuring Ø33 x H13 cm.
Rhododendron Indicum Shinzan - Azalea Shinzan - 60 cm Rhododendron Indicum Shinzan - Azalea Shinzan - 60 cm 2
Available
Flower Bonsai

Rhododendron Indicum Shinzan - Azalea Shinzan - 60 cm

Azalea - Rhododendron
Y45PNE
€450.00
Height (with pot): 60 cm The photo was taken in april Rhododendorn indicum variety Shinzan
Azalea bonsai 34 cm | Oval white pot Azalea bonsai 34 cm | Oval white pot 2
Available
Flower Bonsai

Rhododendron indicum kirishima - Azalea - 34 cm

Azalea - Rhododendron
Y45LTE-7255
€150.00
Bonsai of Azalea characterized by a height without pot of 27 cm, and a trunk size of 1,5 cm. The plant is grown in an oval glazed stoneware pot whose dimensions are 16,5x12,5xH7 cm.
Bonsai of Azalea of 40 cm | Cloud stoneware pot Bonsai of Azalea of 40 cm | Cloud stoneware pot 2
  • New
Available
Masterpiece Bonsai

Rhododendron indicum Hakushikan - Azalea - 40 cm

Azalea - Rhododendron
Y45MAII-7446
€2,909.09
Unique specimen bonsai of Azalea characterized by a height without pot of 32 cm, a trunk size of 6 cm and a nebari of 13 cm. The plant is grown in a cloud unglazed stoneware pot whose dimensions are 25x20xH8 cm.
Azalea bonsai 52 cm | Light green cloud pot Azalea bonsai 52 cm | Light green cloud pot 2
Available
Masterpiece Bonsai

Rhododendron indicum - Azalea - 52 cm

Azalea - Rhododendron
Y45MNEI-7242
€3,590.91
Unique specimen bonsai of Azalea characterized by a height without pot of 40 cm, a trunk size of 7 cm and a nebari of 21 cm. The plant is grown in a cloud glazed stoneware pot whose dimensions are 43x35xH12 cm.
Rhododendron Indicum - Azalea - 39 cm Rhododendron Indicum - Azalea - 39 cm 2
Available
Flower Bonsai

Rhododendron Indicum - Azalea - 39 cm

Azalea - Rhododendron
Y45EMI-6547
€481.82
Bonsai of Rhododendron Indicum characterized by a height without pot of 30,5 cm, a trunk size of 3 and a nebari of 9 cm. The plant is grown in a glazed stoneware pot whose dimensions are 18 x 18 x H 8,5 cm.
Azalea bonsai 28 cm | Stoneware cultivation pot Azalea bonsai 28 cm | Stoneware cultivation pot 2
Available
Flower Bonsai

Rhododendron indicum Kikuhime - Azalea - 28 cm

Azalea - Rhododendron
Y45ATE-7354
€240.91
Azalea bonsai characterised by its height without pot of 21 cm, nebari of 7 cm and trunk size of 1 cm. The plant is grown in a round stoneware pot whose dimensions are Ø16xH7 cm.
Rhododendron Indicum Wakaebisu - Azalea - 65 cm Rhododendron Indicum Wakaebisu - Azalea - 65 cm 2
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Flower Bonsai

Rhododendron Indicum Wakaebisu - Azalea - 65 cm

Azalea - Rhododendron
Y45AMO-6541
€216.36
Bonsai of Rhododendron Indicum characterised by a height of 57 cm without the pot, a trunk diameter of 3 cm and a nebari of 8 cm. Informal upright style. The plant is grown in a glazed stoneware pot measuring 25 x 19 x H 8 cm.
Bonsai of Azalea of 30 cm | Cloud blue pot Bonsai of Azalea of 30 cm | Cloud blue pot 2
  • New
Out-of-Stock
Flower Bonsai

Rhododendron indicum - Azalea - 30 cm

Azalea - Rhododendron
Y45LAI-7460
€109.09
Bonsai of Azalea characterized by a height without pot of 24,5 cm, and a trunk size of 1 cm. The plant is grown in a cloud glazed stoneware pot whose dimensions are 15x12xH5,5 cm.
Rhododendron Indicum - Azalea - 27.5 cm Rhododendron Indicum - Azalea - 27.5 cm 2
Available
Shohin Bonsai

Rhododendron Indicum - Azalea - 27.5 cm

Azalea - Rhododendron
Y45LII-5440
€90.91
Azalea bonsai, measuring 19.5 cm in height (excluding the pot) and with a trunk diameter of 1 cm. The plant, in an informal upright style, is grown in an unglazed rectangular stoneware pot measuring 8.5 x 8.5 x H 8 cm.
Azalea bonsai 70 cm | Cream-coloured oval pot Azalea bonsai 70 cm | Cream-coloured oval pot 2
Available
Flower Bonsai

Rhododendron indicum - Azalea - 70 cm

Azalea - Rhododendron
Y45ETI-7364
€509.09
Azalea bonsai characterised by its height without pot of 60 cm, and trunk size of 1-1.5 cm. The plant is grown in an oval glazed stoneware pot whose dimensions are 31x26xH10 cm.
Azalea bonsai 25 cm | Blue rectangular pot Azalea bonsai 25 cm | Blue rectangular pot 2
Available
Flower Bonsai

Rhododendron indicum - Azalea - 25 cm

Azalea - Rhododendron
Y45TE-7262
€59.09
Bonsai of Azalea characterized by a height without pot of 19 cm, and a trunk size of 1 cm. The plant is grown in a rectangular glazed stoneware pot measuring 13x11xH6 cm.
Azalea bonsai 27 cm | Rectangular blue pot Azalea bonsai 27 cm | Rectangular blue pot 2
Available
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Rhododendron indicum - Azalea - 27 cm

Azalea - Rhododendron
Y45LME-7345
€122.73
Azalea bonsai characterised by a height without pot of 20 cm and a trunk size of 1.5 cm. The plant is grown in a rectangular glazed stoneware pot whose dimensions are 16x13xH7 cm.
Azalea bonsai 28 cm | Rectangular blue pot Azalea bonsai 28 cm | Rectangular blue pot 2
Available
Flower Bonsai

Rhododendron indicum - Azalea - 28 cm

Azalea - Rhododendron
Y45LME-7347
€122.73
Azalea bonsai characterised by a height without pot of 21 cm, and a trunk size of 1.5 cm. The plant is grown in a rectangular glazed stoneware pot whose dimensions are 16x13xH7 cm.
Bonsai of Azalea of 30 cm | Oval turquoise pot Bonsai of Azalea of 30 cm | Oval turquoise pot 2
  • New
Available
Flower Bonsai

Rhododendron indicum - Azalea - 30 cm

Azalea - Rhododendron
Y45LAI-7457
€109.09
Bonsai of Azalea characterized by a height without pot of 24,5 cm, a trunk size of 0,7 cm and a nebari of 4 cm. The plant is grown in an oval glazed stoneware pot whose dimensions are 14x10,5xH5,5 cm.
Rhododendron Indicum - Azalea - 23 cm Rhododendron Indicum - Azalea - 23 cm 2
Out-of-Stock
Flower Bonsai

Rhododendron Indicum - Azalea - 23 cm

Azalea - Rhododendron
Y45LNE-5504
€177.27
Shohin Bonsai of Rhododendron Indicum characterized by a height without pot of 15 cm, a trunk size of 1 cm and a nebari of 4 cm. Slanted style. The plant is grown in a glazed stoneware pot whose dimensions are 8,5 x 8,5 x H 8 cm.
Rhododendron Indicum Sakurakomachi - Azalea - 54 cm Rhododendron Indicum Sakurakomachi - Azalea - 54 cm 2
Available
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Rhododendron Indicum Sakurakomachi - Azalea - 54 cm

Azalea - Rhododendron
Y45UOI-6690
€709.09
Azalea bonsai characterised by its height without pot of 43 cm, trunk size of 2.5 cm and nebari of 6 cm. The plant is grown in an enamelled stoneware pot whose dimensions are Ø 29 x H 11 cm.
Azalea bonsai 58 cm | Black round plastic pot Azalea bonsai 58 cm | Black round plastic pot 2
Available
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Rhododendron indicum benikomachi - Azalea - 58 cm

Azalea - Rhododendron
Y45ATE-7254
€240.91
Bonsai of Azalea characterized by a height without pot of 47,5 cm, and a trunk size of 2 cm. The plant is grown in a round plastic pot whose dimensions are Ø20xH10,5 cm.
Azalea bonsai 135 cm | Brown round plastic pot Azalea bonsai 135 cm | Brown round plastic pot 2
Available
Flower Bonsai

Rhododendron indicum - Azalea - 135 cm

Azalea - Rhododendron
Y45PNE-7267
€450.00
Bonsai of Azalea characterized by a height without pot of 121 cm, a trunk size of 3 cm and a nebari of 6 cm. The plant is grown in a round plastic pot whose dimensions are Ø35,5XH14 cm.
Rhododendron Indicum - Azalea - 73 cm Rhododendron Indicum - Azalea - 73 cm 2
Available
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Rhododendron Indicum - Azalea - 73 cm

Azalea - Rhododendron
Y45EOI-5514
€527.27
Bonsai of Rhododendron Indicum characterized by a height without pot of 64 cm, a trunk size of 2,5 and a nebari of 10 cm. Style bunjin. The plant is grown in a glazed stoneware pot whose dimensions are Ø 31 x H 9 cm.
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