Winter Care for Gardenias 栀子花过冬方法

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日期:2025-01-07

Winter Care for Gardenias
(Region: Cold Northern Areas with Indoor Heating)
Winters in Canada are long, with dry indoor air and limited sunlight. To care for Gardenias (Gardenia jasminoides) during this time, pay attention to the following:
1) Temperature

Gardenias prefer warmth and are not frost-tolerant. Maintain an indoor temperature between 15°C and 24°C during winter.

2) Light

Place the plant near a south-facing window to receive as much direct sunlight as possible through the glass.
During extended cloudy periods, supplement with full-spectrum grow lights.

3) Humidity
Gardenias thrive in high humidity. You can increase humidity using these methods:
a. Use a humidifier near the plant.
b. Place a tray filled with water and some pebbles under the pot, ensuring the soil does not directly touch the water.
c. If the air is extremely dry, cover the plant with a transparent plastic bag. Cut a few ventilation holes in the bag to maintain airflow. Open the bag every few days to let the plant breathe for half a day before covering it again.
4) Watering

Water only when the topsoil feels slightly dry (test with your finger; it should not feel wet). Do not let the soil dry out completely.
Allow tap water to sit indoors for a day before watering to let chlorine dissipate and match room temperature.

5) Fertilizing

Gardenias grow more slowly in winter compared to summer, so avoid heavy fertilization.
Fertilize once a month with a balanced liquid fertilizer (equal parts nitrogen, phosphorus, and potassium).

6) Pruning and Shaping

Prune dead or weak branches moderately in winter to conserve the plant's energy.
Avoid excessive pruning to ensure the plant produces plenty of flowers the following year.

7) Pest Control

Poor indoor ventilation in winter can lead to infestations of spider mites and scale insects.
Regularly check the undersides of leaves for pests. If found, spray with soapy water for treatment.
Periodically move the plant to a bathroom and rinse the tops and undersides of leaves, as well as the branches, using a faucet. Allow water to drain through the soil and out of the pot’s bottom holes. This helps clear potential pest issues and keeps the plant healthy.

Long-Term Care
Following these steps will help your Gardenia safely overwinter and prepare for spring growth. Once the weather warms up, it’s best to move the Gardenia outdoors for care, using the “three essentials” method: ample water, nutrients, and sunlight.

栀子花过冬方法
（地区：寒冷北方、室内供暖地区）

加拿大冬天漫长，室内空气干燥，阳光不足，这时养栀子花（Gardenia jasminoides）需要注意以下几个方面：
1）栀子花喜欢温暖，不耐寒，冬天室内温度需保持在 15°C 至 24°C 之间。
2）摆放在朝南的窗口旁边，尽量接受透过玻璃的直射阳光。当连续出现阴天时，可以用全光谱的植物生长灯补充光照。
3）栀子花喜欢高湿度，可以通过以下方法增加湿度：
a. 使用加湿器
b. 在花盆底部放一个装有水的托盘，在托盘里放一点石头，避免花盆的土壤直接接触托盘里的水
c. 如果空气特别干燥，可以用透明塑料袋罩住植株，在塑料袋上剪几个通风口，这能让植物维持湿度，每隔几天可以打开塑料袋透气半天，再把塑料袋罩起来。
4）浇水
等盆土稍干（用手指摸泥土，手指不湿）再浇水，不能让盆土完全干透。把自来水在室内存放一天后再浇。
5）施肥
和夏天相比，栀子花在冬天生长比较缓慢，不宜大量施肥，可以每月施肥一次，使用氮磷钾均衡的液体肥。
6）修剪和整形
冬季可适当修剪枯枝、弱枝，有助于植株节省能量，但不要过量修剪，以免影响来年的花量。
7）病虫害防治
冬季室内通风差，栀子花容易感染红蜘蛛、蚧壳虫等害虫。要定期检查叶片背面，发现害虫要及时用肥皂水喷雾处理。
可以定期把植物搬到浴室，用龙头喷洗叶片的正面和反面，以及枝条的各个角落，让大量的水通过盆土从底孔流出，这个方法有助于清理病虫害隐患，让植物生长得更健康。

按照以上方法养护，栀子花可以安全越冬，并为春天的生长做好准备，到了天气暖和的时候最好把栀子花放在室外养护，采用大水大肥大太阳的养护方法。
Source from chat.openai. Organized by Qiuye. Not for reprint. 不得转载！

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Winter Care for Gardenias 栀子花过冬方法

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