凤眼睫

凤眼睫的基本数据

养护难度

适合新手

寿命

多年生草本

体型

株高60-120厘米（最高约1.5米）

浇水

在肥沃土壤中种植

光照与照明

花朵绽放良好需要充足日光照射。

二氧化碳与肥料

不需要二氧化碳。种植在富含有机物的肥沃土壤中。

水温与水质

耐寒性强（美国农业部耐寒等级3-10）。冬季地上部枯死，春季萌发，为落叶性多年生草本。

基质与着根

春季可在池塘边缘泥土中种植，或在容器中种植并沉于约8-13厘米的水深处。

修剪与繁殖方式

通过地下茎蔓延，若过度增长则在春季进行分株。若要控制蔓延应采用容器栽培。

注意事项

无重大病虫害，但需注意红蜘蛛。不可种植或弃置于池塘、河流或灌溉沟渠中。

关于凤眼睫

Pontederia cordata (pickerel weed) is a cold-hardy North American aquatic perennial with glossy heart-shaped leaves and blue-purple flower spikes. Easy to grow for beginners in ponds or large containers.

开始养护凤眼睫前需要了解的7件事

1. 1Give It Full Sun

   Pontederia cordata flowers best with plenty of direct sunlight throughout the day, so place it where it gets full sun outdoors. It will tolerate partial shade, but flowering tends to be sparser.

2. 2Keep the Roots Submerged

   As an emergent aquatic plant, it needs its pot or root zone kept a few centimeters underwater at all times. If planting at a pond's edge, watch for water-level swings and avoid letting it dry out completely.

3. 3Use Aquatic Planting Soil

   A well-draining aquatic potting mix based on field or paddy soil suits it well. Nutrient-rich clay-based soils like akadama or arakida encourage more vigorous growth.

4. 4Divide Every 1-2 Years

   It grows vigorously and clumps can become crowded, so dividing and repotting roughly every one to two years keeps the roots from becoming pot-bound. Spring, as new growth begins, is the best time to do this. Because it is a non-native plant from North America, never plant or dump surplus divisions in ponds, rivers or waterways; dry them out and dispose of them with household waste.

5. 5Foliage Dies Back in Winter

   The leaves and stems die back from autumn into winter, a natural part of dormancy, and new shoots return in spring as long as the roots stay alive. Being cold-hardy, it can overwinter outdoors in a pond without extra protection.

6. 6Check Leaves and Base

   When choosing a plant, look for firm, glossy leaves and a sturdy base with healthy-looking roots for the smoothest start. Avoid plants with leaf tips that are already browning or dried out.

7. 7Deadhead Spent Spikes

   Removing spent flower spikes promptly redirects the plant's energy toward new blooms and reduces strain on the plant. Since it flowers continuously from June through October, regular deadheading keeps the show going longer.

凤眼睫的常见问题

Q.Can I grow it without an outdoor garden?

A.Yes — with a large water lily tub or planter kept filled with water, you can grow it on a balcony or patio without a garden. Since it's an emergent aquatic plant, you'll need a container that keeps it submerged at all times.

Q.Does it need to come indoors for winter?

A.No, thanks to its cold-hardy perennial nature it can overwinter outdoors in a pond. The top growth dies back, but new shoots return in spring as long as the roots survive.

Q.When does it bloom?

A.It blooms from June through October, producing blue-purple flower spikes in succession. With such a long bloom period, you can enjoy flowers from early summer well into autumn.

Q.How big does it get?

A.It typically grows to about 60-120 cm tall, with vigorous plants reaching around 1.5 m. A large container or a pond edge with some room to spread suits it well.

Q.Can it be planted in the same pond as fish like medaka?

A.Pontederia cordata is commonly planted as an emergent plant at pond edges, including ponds that also house aquatic animals. Since it grows into a substantial clump, it's worth planning the layout so it doesn't crowd out swimming space.

凤眼睫种植的实用工具

在图鉴中详细了解凤眼睫

同分类的更多品种