Persicaria orientalis — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Persicaria orientalis

Persicaria Orientalis

Updated · 2,693 observations
Photo · (c) Сергей, some rights reserved (CC BY-NC), uploaded by Сергей COURTESY INATURALIST
ON THIS PLANT

Persicaria orientalis is a species of flowering plant in the family Polygonaceae, known as kiss-me-over-the-garden-gate and princess-feather. It was first described, as Polygonum orientale, by Carl Linnaeus in 1753. It was transferred to the genus Persicaria by Édouard Spach in 1841. Its native distribution is unclear. As of May 2019, Plants of the World Online lists only Uzbekistan, whereas other sources give a much wider distribution in temperate and tropical Asia and Australia. It is widely cultivated and naturalized.

A note from PlantMom

Kiss-me-over-the-garden-gate has strong resistance to diseases and is typically not very susceptible to them. Still, it can be affected by pests and diseases that exist in the surrounding area. When infections occur, they are generally mild. Regarding care, this plant needs a moderate amount of attention. Regular pruning is necessary to preserve an attractive appearance and encourage healthy growth. Applying fertilizer can also help increase flowering. Kiss-me-over-the-garden-gate is appropriate for anyone with outdoor space, such as a garden or a patio, and does not demand extensive gardening experience. It may need more intensive care if grown indoors.

— PlantMom
CARE GUIDE

How to keep Persicaria Orientalis.

Light

Kiss-me-over-the-garden-gate performs best in full sun but can tolerate lower light levels, demonstrating some flexibility in its light requirements. Native to sunny habitats, it grows vigorously with plenty of sunlight. However, both excessively intense, continual sun and inadequate light can impede its healthy growth.

Water

Kiss-me-over-the-garden-gate thrives in consistently moist environments. Although it is moderately drought-tolerant, weekly watering promotes lush growth. During the growing season, rainwater is ideal for keeping it hydrated, as it provides a more natural moisture source than tap water.

Temperature

Kiss-me-over-the-garden-gate comes from habitats where temperatures are generally between 68 and 95 °F (20 and 35 ℃). In colder seasons, it is advisable to keep the surrounding conditions as close to that range as possible.

Fertilizer

When Kiss-me-over-the-garden-gate has opened most of its blooms to full size, it's time to start fertilizing again. Around the peak of flowering, resume fertilizing once every three to four weeks, weather permitting. Then, once Kiss-me-over-the-garden-gate begins producing fewer new blooms, stop fertilizing; there's no need to fertilize when the plant can't produce any more blooms.

Pruning

Kiss-me-over-the-garden-gate features graceful, hanging pink flowers that thrive with regular pruning from early to late spring. To promote healthy growth and improve air circulation, remove any weak stems and shape the plant as needed. Pruning regularly encourages denser foliage and more abundant blooms. Always use clean tools to maintain the plant's health.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual, Biennial
Genus
Persicaria
Family
Polygonaceae
Hardiness Zone
7-10
Mature Height
0.91 m to 2.13 m
Mature Spread
0.61 m to 1.22 m
Leaf Color
Green
Leaf Type
Semi-evergreen
Flower Color
Pink
Flower Size
7.62 cm to 15.24 cm
Bloom Time
Mid summer, Late summer, Early fall, Mid fall
Planting Time
Spring, Autumn
Harvest Time
Fall
Native Area
Sri Lanka, India, Malaysia, Philippines, Bangladesh, Laos, China, Russia, Indonesia, Cambodia, Vietnam, Myanmar, Japan, Koppen, Bhutan, South Korea, Thailand
ALSO KNOWN AS

Other names.

en Kiss-me-over-the-garden-gate en Prince's-feather en Princess-feather en Kiss me over the garden gate en Oriental Smartweed en Prince's Plume en Prince's-plume Knotweed en Eastern knotgrass en Prince's feather smartweed en Princesfeather
FREQUENTLY ASKED

Reader questions.

How should I water my Kiss-me-over-the-garden-gate plant?

There are several ways you can water Kiss-me-over-the-garden-gate. You can use a garden hose with a spray nozzle, a watering can, or any other common watering tool. This plant is not too particular about its water source, as it can survive on rainwater, tap water, or filtered water. It's generally best to avoid watering from above, as this can harm the leaves and flowers and potentially cause disease. A drip irrigation system is often the most effective method for watering Kiss-me-over-the-garden-gate. These systems distribute water evenly and directly to the soil. If you have a container-grown Kiss-me-over-the-garden-gate, use a cup, watering can, or tap to water it directly at the soil.

Why do I have to add fertilizer to my Kiss-me-over-the-garden-gate plant?

Plants require nutrients to survive, and most gardeners understand this well. In the case of Kiss-me-over-the-garden-gate, without proper nourishment, the plant will perish soon after the first pollination. To ensure the plant thrives throughout the blooming season and produces beautiful flowers, it is crucial to provide the right nutrients in the right amounts. Fertilizer plays a key role in helping Kiss-me-over-the-garden-gate develop a strong and healthy root system. This is particularly important because the plant has a delicate and easily damaged root structure. By fertilizing during planting, the plant can establish a stable root structure that not only provides support but also enhances its ability to produce stunning flowers. When done at the right time, fertilization can significantly prolong Kiss-me-over-the-garden-gate's blooming period.

What are the sun requirements for Kiss-me-over-the-garden-gate plants?

Kiss-me-over-the-garden-gate plants require full sun, meaning they thrive with more than 6 hours of sunlight daily, but they can also grow in partial sun, which is about 3-6 hours of sunlight. It's recommended to observe the movement of sunlight through your garden to find spots that offer a perfect balance of light and shade, ensuring the plants' wellbeing. Originating from sun-rich habitats, these plants perform best under ample sunlight, although both too much and too little light can impair their growth.

What are the ideal temperature conditions for Kiss-me-over-the-garden-gate?

Kiss-me-over-the-garden-gate, also known by its botanical name Persicaria orientalis, thrives best in temperatures mainly between 68 to 95 °F (20 to 35 °C). To ensure the plant's health, it's recommended to maintain the surrounding environment within this temperature range, especially in cooler seasons. The plant possesses strong cold resistance, so special frost protection measures are not usually necessary. However, it's essential to provide cold protection if winter temperatures are expected to drop below -15°C, which can be achieved by covering the plant with soil or straw. Additionally, before the first freeze in autumn, watering the plant abundantly to keep the soil moist is advised, as it helps prevent drought and water scarcity during winter and early spring.

What should I do if I give too much or too little water to my Kiss-me-over-the-garden-gate?

If your Kiss-me-over-the-garden-gate plant is lacking moisture, the solution is simple: water it more regularly. Overwatering, however, can be a serious issue that can lead to diseases and the eventual death of the plant. To prevent overwatering, choose a location with plenty of sunlight and good drainage. If your potted plant is overwatered, consider repotting it with loose soils and a pot that drains well.

When should I fertilize my Kiss-me-over-the-garden-gate plant?

Kiss-me-over-the-garden-gate grows quickly after the last frost. It should be fertilized during planting. This is the only time it needs fertilizer until the blooms are fully formed. When the plant is in full bloom, start fertilizing every three to four weeks, depending on the weather. Stop fertilizing when the plant stops producing new blooms.

What are the essential care tips for Kiss-me-over-the-garden-gate plants regarding sunlight?

For healthy growth, Kiss-me-over-the-garden-gate plants should ideally be placed in full sun. In locations where natural sunlight is insufficient, especially during winter or in less sunny spaces, artificial lighting can be utilized. LED lights are recommended because they can be customized to provide specific wavelengths needed for plant growth. Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants require 10-20W/sq ft. The artificial light source should be placed 12-36 inches above the plant, and the duration should mimic natural daylight hours, generally 8-12 hours per day.

How does Kiss-me-over-the-garden-gate respond to low temperatures, and what are the recommended actions?

Kiss-me-over-the-garden-gate is cold-tolerant and prefers temperatures above 20°C, but it should be kept above 0°C during winter. If temperatures fall below -15°C, the plant may not show noticeable changes immediately, but there may be a decrease in sprouting or even no sprouting during springtime. To manage this, any parts of the plant that have failed to sprout by spring should be removed to encourage new growth.

How often should I water my Kiss-me-over-the-garden-gate plant?

For Kiss-me-over-the-garden-gate, regular watering is essential throughout the growing season. In spring, water it once a week. As the weather gets warmer, you may need to water it two to three times a week. However, be cautious not to overwater, as it can harm the plant. The soil should always be moist but not wet. When it comes to potted Kiss-me-over-the-garden-gate, you'll need to water it more frequently due to faster drying of the soil. Typically, a few times a week for a potted plant compared to once a week for a ground plant.

When is it not a good time to fertilize my Kiss-me-over-the-garden-gate plant?

Regular fertilizing is important for Kiss-me-over-the-garden-gate, but it's crucial to apply it at the right time. There are situations when it's necessary to hold back on fertilizing. These situations are often related to the climate, but there are also controllable factors involved. In essence, if there is something wrong with the plant, the soil, or the climate, it's best to wait until the issues have been resolved and the plant has recovered. For example, if there are severe or unexpected changes in the weather, like a sudden cold snap in the middle of summer, it's wise to wait until the temperature warms up again before starting to fertilize. The same applies if the soil is too dry or compacted to absorb anything. Fertilizer in this case would go directly to the roots without being diffused by the soil, which can be harmful for Kiss-me-over-the-garden-gate. Furthermore, during the hottest parts of the day when temperatures soar to around 90 degrees Fahrenheit, it's best not to apply fertilizer. Different temperatures can affect how quickly fertilizer breaks down, so it's important to avoid allowing high temperatures to break it down too rapidly. Additionally, it's important to address any pest or disease issues and resolve them before re-fertilizing.

What are the symptoms of Kiss-me-over-the-garden-gate plants not receiving enough light?

When Kiss-me-over-the-garden-gate plants don't get enough light, they may exhibit several symptoms. These include smaller new leaves, leggy or sparse growth, faster leaf drop, stunted or no new growth, lighter-colored new leaves, and symptoms of excessive sunlight like chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These signs indicate that the plant is not receiving the optimal amount of sunlight for its development.

What should be done if Kiss-me-over-the-garden-gate experiences high temperatures?

During summer, it is crucial to keep Kiss-me-over-the-garden-gate below 35°C. Exposure to temperatures exceeding 41°C can lead to the leaves becoming lighter in color, prone to curling, susceptible to sunburn, and in severe cases, may cause the entire plant to wilt and dry. To mitigate these effects, trim away the sunburned and dried-up parts of the plant. Additionally, move the plant to a location that provides shade during the midday and afternoon sun or use a shade cloth to protect it. Ensuring the plant is watered in the morning and evening will keep the soil moist and further aid in protecting the plant from high temperatures.

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