Introduction to the Planting Methods and Cultivation Management Techniques of Deutzia parviflora
Deutzia parviflora is a deciduous shrub in the genus Deutzia, family Saxifragaceae. It is distributed in Northeast and North China, and also in Russia and Korea. It mostly grows at the edges of broad-leaved forests or in thickets. The flowers of Deutzia parviflora are elegant in color, small but densely packed. Its blooming period coincides with the flower-scarce summer season, making it an excellent material for landscaping. The cultivation and management techniques are introduced below for readers.
Morphological Characteristics and Ecological Habits
Deutzia parviflora grows 1 m to 2 m tall. The bark is grayish-brown and peeling; the young branches are brown, scattered with stellate hairs, and the old branches are gray and flaking. The buds are ovate-conical, with brown scales and densely covered with stellate hairs. The leaves are opposite, with petioles 3 mm to 5 mm long; the leaf blades are ovate, narrowly ovate, or obovate, 3.5 cm to 8 cm long and 2 cm to 5 cm wide. The inflorescence is corymbose, 2 cm to 5 cm in diameter. The pedicels and calyx are densely covered with stellate hairs; the calyx is campanulate with 5 broadly ovate lobes; the petals are 5, white, and rounded-obovate. The capsule is oblate-spherical, with numerous small seeds. The flowering period is June, and the fruiting period is August to September.
Deutzia parviflora prefers light, is slightly shade-tolerant, strongly cold-tolerant, and drought-tolerant, but does not tolerate waterlogging. It is not demanding about soil, preferring deep, fertile sandy loam, and can also grow normally in light clay, but grows poorly in saline-alkali soil. It has strong sprouting ability and tolerates pruning.
Planting Methods and Water and Fertilizer Management
Planting of Deutzia parviflora is best carried out before late March in early spring and around mid-November. When planting, the seedlings should be kept with soil balls as much as possible to ensure their survival rate. Base fertilizer should be applied before planting. Well-rotted and fermented cow or horse manure or chicken manure can be used as base fertilizer, and the base fertilizer must be thoroughly mixed with the planting soil. During planting, the backfilled soil should be tamped layer by layer, then the first watering should be given, the second watering one week later, and the third watering after another week.
Deutzia parviflora prefers fertilizer. In addition to applying base fertilizer at planting, topdressing should also be applied during cultivation. Generally, quick-acting chemical fertilizers are suitable for topdressing, applied according to the principle of small amounts and frequent applications. In early summer, urea can be applied to promote branch and leaf growth, while in early autumn, a phosphorus-potassium compound fertilizer should be applied to promote lignification of new branches. In late autumn, combined with watering for frost protection, sesame paste residue or leaf mold fertilizer can be applied. The application method can be either ring application or hole application. It is worth mentioning that if the tree grows weakly after transplanting, foliar spraying can be used to promote growth and improve vigor.
Deutzia parviflora prefers a moist environment. In addition to watering well for the first three times at planting, the soil should be kept moist throughout the growing period. Generally, in April, May, and June, one to two thorough waterings per month can be given. July and August are periods of abundant rainfall, so if it is not excessively dry, watering can be omitted. In September, October, and early November, one thorough watering is sufficient. In early December, water for freezing protection should be given. In early spring of the following year, in March, water for thawing should be given. The root system of Deutzia parviflora is relatively shallow. Although it is fairly drought-tolerant, sufficient moisture can make its branches and leaves luxuriant, so watering during the growing period should not be neglected.
Pest and Disease Control
The pests that harm Deutzia parviflora include the carmine spider mite and the two-spotted whitefly. If carmine spider mites occur, 1.8% avermectin EC at 3000 times dilution can be sprayed during the damage period for control, or Bordeaux mixture at Baume degree can be sprayed before bud break in early spring to eliminate overwintering mites. If two-spotted whiteflies occur, 25% buprofezin wettable powder at 1000 times dilution or 10% imidacloprid wettable powder at 2000 times dilution can be sprayed during the young larval stage for control.
The common disease of Deutzia parviflora is sooty mold, which mostly occurs during high-temperature and high-humidity periods in summer. In cultivation management, tree pruning should be strengthened to improve ventilation and light penetration. Routine management should also pay attention to pest control. If it occurs, 75% thiophanate-methyl wettable powder at 1000 times dilution can be sprayed, and 3 to 4 consecutive sprays can effectively control the disease.
Propagation Methods
Deutzia parviflora can be propagated by sowing, cuttings, division, and other methods. Because its seeds are small and bran-like, sowing propagation is greatly affected by natural conditions, and growth is slow with late flowering. Although division has the characteristics of fast growth and a high survival rate, it is complicated to operate and produces few plants. Therefore, cutting propagation is mostly used for propagating Deutzia parviflora.
The cutting medium can be plain sandy soil or coarse river sand, which should be sprayed with 0.2% potassium permanganate solution for disinfection before use. In early July, select one-year-old semi-lignified branches and cut them into cuttings about 12 cm long. The upper cut of the cutting should be flat, and the lower cut should be horseshoe-shaped. Bundle 20 cuttings together, soak them in an ABT rooting agent solution at a concentration of 500 mg/L for 12 hours, and then insert them for cuttings at a spacing of 5 cm × 5 cm. Immediately after cutting, spray thoroughly once, then set up a plastic arched shed and install a shade net over it, allowing sunlight only before 8 a.m. and after 18 p.m., and shading at all other times. Mist the cuttings twice a day to keep the humidity inside the shed no lower than 80%, and roots can form in about 15 days. Half a month after rooting, apply a mixed solution of 0.2% monopotassium phosphate and 0.5% urea once every 10 days as fertilizer to help the cuttings grow roots and leaves. Take cold protection measures in winter, and transplanting can be carried out at the end of March the following year to cultivate larger seedlings.
Pruning Methods
The common plant form of Deutzia parviflora is a clustered round-headed shape. After the seedlings are planted, the selected main branches should be heavily shortened to promote branching. During winter pruning, thin and weak branches and root suckers sprouting from the root crown should be removed. For thin, curved branches with weaker growth, 1/5 of the total length can be cut off, retaining only the plump flower buds in the middle of the branch. For upright long flowering branches with vigorous growth and slightly heavier tips, select 3 to 4 and leave them unpruned, while the remaining overly long flowering branches should be treated by renewal pruning. For water sprouts, heavy shortening can be used to promote more branching and increase flowering branches, or they can be kept as renewal branches for future use.
Landscape Application
Deutzia parviflora has elegant flower colors. In landscaping, it can be used as a natural flowering hedge, planted in clusters to accent lawns and forest edges, planted in masses, or used to accent rockeries. Its flowering branches can also be used for vase display.
Cultivation and Management Techniques of Deutzia parviflora
Deutzia parviflora is a deciduous shrub in the genus Deutzia, family Saxifragaceae. It is distributed in Northeast and North China, and also in Russia and Korea. It mostly grows at the edges of broad-leaved forests or in thickets. The flowers of Deutzia parviflora are elegant in color, small but densely packed. Its blooming period coincides with the flower-scarce summer season, making it an excellent material for landscaping. The cultivation and management techniques are introduced below for readers.
Morphological Characteristics and Ecological Habits
Deutzia parviflora grows 1 m to 2 m tall. The bark is grayish-brown and peeling; the young branches are brown, scattered with stellate hairs, and the old branches are gray and flaking. The buds are ovate-conical, with brown scales and densely covered with stellate hairs. The leaves are opposite, with petioles 3 mm to 5 mm long; the leaf blades are ovate, narrowly ovate, or obovate, 3.5 cm to 8 cm long and 2 cm to 5 cm wide. The inflorescence is corymbose, 2 cm to 5 cm in diameter. The pedicels and calyx are densely covered with stellate hairs; the calyx is campanulate with 5 broadly ovate lobes; the petals are 5, white, and rounded-obovate. The capsule is oblate-spherical, with numerous small seeds. The flowering period is June, and the fruiting period is August to September.
Deutzia parviflora prefers light, is slightly shade-tolerant, strongly cold-tolerant, and drought-tolerant, but does not tolerate waterlogging. It is not demanding about soil, preferring deep, fertile sandy loam, and can also grow normally in light clay, but grows poorly in saline-alkali soil. It has strong sprouting ability and tolerates pruning.
Planting Methods and Water and Fertilizer Management
Planting of Deutzia parviflora is best carried out before late March in early spring and around mid-November. When planting, the seedlings should be kept with soil balls as much as possible to ensure their survival rate. Base fertilizer should be applied before planting. Well-rotted and fermented cow or horse manure or chicken manure can be used as base fertilizer, and the base fertilizer must be thoroughly mixed with the planting soil. During planting, the backfilled soil should be tamped layer by layer, then the first watering should be given, the second watering one week later, and the third watering after another week.
Deutzia parviflora prefers fertilizer. In addition to applying base fertilizer at planting, topdressing should also be applied during cultivation. Generally, quick-acting chemical fertilizers are suitable for topdressing, applied according to the principle of small amounts and frequent applications. In early summer, urea can be applied to promote branch and leaf growth, while in early autumn, a phosphorus-potassium compound fertilizer should be applied to promote lignification of new branches. In late autumn, combined with watering for frost protection, sesame paste residue or leaf mold fertilizer can be applied. The application method can be either ring application or hole application. It is worth mentioning that if the tree grows weakly after transplanting, foliar spraying can be used to promote growth and improve vigor.
Deutzia parviflora prefers a moist environment. In addition to watering well for the first three times at planting, the soil should be kept moist throughout the growing period. Generally, in April, May, and June, one to two thorough waterings per month can be given. July and August are periods of abundant rainfall, so if it is not excessively dry, watering can be omitted. In September, October, and early November, one thorough watering is sufficient. In early December, water for freezing protection should be given. In early spring of the following year, in March, water for thawing should be given. The root system of Deutzia parviflora is relatively shallow. Although it is fairly drought-tolerant, sufficient moisture can make its branches and leaves luxuriant, so watering during the growing period should not be neglected.
Pest and Disease Control
The pests that harm Deutzia parviflora include the carmine spider mite and the two-spotted whitefly. If carmine spider mites occur, 1.8% avermectin EC at 3000 times dilution can be sprayed during the damage period for control, or Bordeaux mixture at Baume degree can be sprayed before bud break in early spring to eliminate overwintering mites. If two-spotted whiteflies occur, 25% buprofezin wettable powder at 1000 times dilution or 10% imidacloprid wettable powder at 2000 times dilution can be sprayed during the young larval stage for control.
The common disease of Deutzia parviflora is sooty mold, which mostly occurs during high-temperature and high-humidity periods in summer. In cultivation management, tree pruning should be strengthened to improve ventilation and light penetration. Routine management should also pay attention to pest control. If it occurs, 75% thiophanate-methyl wettable powder at 1000 times dilution can be sprayed, and 3 to 4 consecutive sprays can effectively control the disease.
Propagation Methods
Deutzia parviflora can be propagated by sowing, cuttings, division, and other methods. Because its seeds are small and bran-like, sowing propagation is greatly affected by natural conditions, and growth is slow with late flowering. Although division has the characteristics of fast growth and a high survival rate, it is complicated to operate and produces few plants. Therefore, cutting propagation is mostly used for propagating Deutzia parviflora.
The cutting medium can be plain sandy soil or coarse river sand, which should be sprayed with 0.2% potassium permanganate solution for disinfection before use. In early July, select one-year-old semi-lignified branches and cut them into cuttings about 12 cm long. The upper cut of the cutting should be flat, and the lower cut should be horseshoe-shaped. Bundle 20 cuttings together, soak them in an ABT rooting agent solution at a concentration of 500 mg/L for 12 hours, and then insert them for cuttings at a spacing of 5 cm × 5 cm. Immediately after cutting, spray thoroughly once, then set up a plastic arched shed and install a shade net over it, allowing sunlight only before 8 a.m. and after 18 p.m., and shading at all other times. Mist the cuttings twice a day to keep the humidity inside the shed no lower than 80%, and roots can form in about 15 days. Half a month after rooting, apply a mixed solution of 0.2% monopotassium phosphate and 0.5% urea once every 10 days as fertilizer to help the cuttings grow roots and leaves. Take cold protection measures in winter, and transplanting can be carried out at the end of March the following year to cultivate larger seedlings.
Pruning Methods
The common plant form of Deutzia parviflora is a clustered round-headed shape. After the seedlings are planted, the selected main branches should be heavily shortened to promote branching. During winter pruning, thin and weak branches and root suckers sprouting from the root crown should be removed. For thin, curved branches with weaker growth, 1/5 of the total length can be cut off, retaining only the plump flower buds in the middle of the branch. For upright long flowering branches with vigorous growth and slightly heavier tips, select 3 to 4 and leave them unpruned, while the remaining overly long flowering branches should be treated by renewal pruning. For water sprouts, heavy shortening can be used to promote more branching and increase flowering branches, or they can be kept as renewal branches for future use.
Landscape Application
Deutzia parviflora has elegant flower colors. In landscaping, it can be used as a natural flowering hedge, planted in clusters to accent lawns and forest edges, planted in masses, or used to accent rockeries. Its flowering branches can also be used for vase display. (The author's unit is Huamei Comprehensive Service Office of Huabei Oilfield, Renqiu City, Hebei Province)
Cultivation and Management Techniques of Deutzia parviflora
China Landscape Network, February 27 news: Deutzia parviflora is a deciduous shrub in the genus Deutzia, family Saxifragaceae. It is distributed in Northeast and North China, and also in Russia and Korea. It mostly grows at the edges of broad-leaved forests or in thickets. The flowers of Deutzia parviflora are elegant in color, small but densely packed. Its blooming period coincides with the flower-scarce summer season, making it an excellent material for landscaping. The cultivation and management techniques are introduced below for readers.
Morphological Characteristics and Ecological Habits
Deutzia parviflora grows 1 m to 2 m tall. The bark is grayish-brown and peeling; the young branches are brown, scattered with stellate hairs, and the old branches are gray and flaking. The buds are ovate-conical, with brown scales and densely covered with stellate hairs. The leaves are opposite, with petioles 3 mm to 5 mm long; the leaf blades are ovate, narrowly ovate, or obovate, 3.5 cm to 8 cm long and 2 cm to 5 cm wide. The inflorescence is corymbose, 2 cm to 5 cm in diameter. The pedicels and calyx are densely covered with stellate hairs; the calyx is campanulate with 5 broadly ovate lobes; the petals are 5, white, and rounded-obovate. The capsule is oblate-spherical, with numerous small seeds. The flowering period is June, and the fruiting period is August to September.
Deutzia parviflora prefers light, is slightly shade-tolerant, strongly cold-tolerant, and drought-tolerant, but does not tolerate waterlogging. It is not demanding about soil, preferring deep, fertile sandy loam, and can also grow normally in light clay, but grows poorly in saline-alkali soil. It has strong sprouting ability and tolerates pruning.
Planting Methods and Water and Fertilizer Management
Planting of Deutzia parviflora is best carried out before late March in early spring and around mid-November. When planting, the seedlings should be kept with soil balls as much as possible to ensure their survival rate. Base fertilizer should be applied before planting. Well-rotted and fermented cow or horse manure or chicken manure can be used as base fertilizer, and the base fertilizer must be thoroughly mixed with the planting soil. During planting, the backfilled soil should be tamped layer by layer, then the first watering should be given, the second watering one week later, and the third watering after another week.
Deutzia parviflora prefers fertilizer. In addition to applying base fertilizer at planting, topdressing should also be applied during cultivation. Generally, quick-acting chemical fertilizers are suitable for topdressing, applied according to the principle of small amounts and frequent applications. In early summer, urea can be applied to promote branch and leaf growth, while in early autumn, a phosphorus-potassium compound fertilizer should be applied to promote lignification of new branches. In late autumn, combined with watering for frost protection, sesame paste residue or leaf mold fertilizer can be applied. The application method can be either ring application or hole application. It is worth mentioning that if the tree grows weakly after transplanting, foliar spraying can be used to promote growth and improve vigor.
Deutzia parviflora prefers a moist environment. In addition to watering well for the first three times at planting, the soil should be kept moist throughout the growing period. Generally, in April, May, and June, one to two thorough waterings per month can be given. July and August are periods of abundant rainfall, so if it is not excessively dry, watering can be omitted. In September, October, and early November, one thorough watering is sufficient. In early December, water for freezing protection should be given. In early spring of the following year, in March, water for thawing should be given. The root system of Deutzia parviflora is relatively shallow. Although it is fairly drought-tolerant, sufficient moisture can make its branches and leaves luxuriant, so watering during the growing period should not be neglected.
Pest and Disease Control
The pests that harm Deutzia parviflora include the carmine spider mite and the two-spotted whitefly. If carmine spider mites occur, 1.8% avermectin EC at 3000 times dilution can be sprayed during the damage period for control, or Bordeaux mixture at Baume degree can be sprayed before bud break in early spring to eliminate overwintering mites. If two-spotted whiteflies occur, 25% buprofezin wettable powder at 1000 times dilution or 10% imidacloprid wettable powder at 2000 times dilution can be sprayed during the young larval stage for control.
The common disease of Deutzia parviflora is sooty mold, which mostly occurs during high-temperature and high-humidity periods in summer. In cultivation management, tree pruning should be strengthened to improve ventilation and light penetration. Routine management should also pay attention to pest control. If it occurs, 75% thiophanate-methyl wettable powder at 1000 times dilution can be sprayed, and 3 to 4 consecutive sprays can effectively control the disease.
Propagation Methods
Deutzia parviflora can be propagated by sowing, cuttings, division, and other methods. Because its seeds are small and bran-like, sowing propagation is greatly affected by natural conditions, and growth is slow with late flowering. Although division has the characteristics of fast growth and a high survival rate, it is complicated to operate and produces few plants. Therefore, cutting propagation is mostly used for propagating Deutzia parviflora.
The cutting medium can be plain sandy soil or coarse river sand, which should be sprayed with 0.2% potassium permanganate solution for disinfection before use. In early July, select one-year-old semi-lignified branches and cut them into cuttings about 12 cm long. The upper cut of the cutting should be flat, and the lower cut should be horseshoe-shaped. Bundle 20 cuttings together, soak them in an ABT rooting agent solution at a concentration of 500 mg/L for 12 hours, and then insert them for cuttings at a spacing of 5 cm × 5 cm. Immediately after cutting, spray thoroughly once, then set up a plastic arched shed and install a shade net over it, allowing sunlight only before 8 a.m. and after 18 p.m., and shading at all other times. Mist the cuttings twice a day to keep the humidity inside the shed no lower than 80%, and roots can form in about 15 days. Half a month after rooting, apply a mixed solution of 0.2% monopotassium phosphate and 0.5% urea once every 10 days as fertilizer to help the cuttings grow roots and leaves. Take cold protection measures in winter, and transplanting can be carried out at the end of March the following year to cultivate larger seedlings.
Pruning Methods
The common plant form of Deutzia parviflora is a clustered round-headed shape. After the seedlings are planted, the selected main branches should be heavily shortened to promote branching. During winter pruning, thin and weak branches and root suckers sprouting from the root crown should be removed. For thin, curved branches with weaker growth, 1/5 of the total length can be cut off, retaining only the plump flower buds in the middle of the branch. For upright long flowering branches with vigorous growth and slightly heavier tips, select 3 to 4 and leave them unpruned, while the remaining overly long flowering branches should be treated by renewal pruning. For water sprouts, heavy shortening can be used to promote more branching and increase flowering branches, or they can be kept as renewal branches for future use.
Landscape Application
Deutzia parviflora has elegant flower colors. In landscaping, it can be used as a natural flowering hedge, planted in clusters to accent lawns and forest edges, planted in masses, or used to accent rockeries. Its flowering branches can also be used for vase display. (The author's unit is Huamei Comprehensive Service Office of Huabei Oilfield, Renqiu City, Hebei Province)