Silene uniflora
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Silene uniflora

Sea campion · Bladder campion · Strandglim

Tier 1 Difficulty: medium Water: low Light: full_sun
0
Soil pH
6–7
Hardiness
Zone 3–8
Click count
200
Observations
1,941

Description

Source: leafsnap

Silene uniflora is a species of flowering plant in the family Caryophyllaceae known by the common name sea campion.

Care Guide

💧 Water

Sea campion is a plant native to coastal regions, where it thrives in salty, intermittently moist environments with well-drained soils. To replicate its natural habitat, it needs weekly watering and occasional misting. This hardy plant is well-suited to salty climates, showcasing its adaptability to coastal conditions.

FAQ
How should I water my Sea campion plant?

When watering the Sea campion, it's best to use filtered water at room temperature. Tap water may contain harmful particles, so filtered water is preferred. The plant prefers warm water because it comes from a warm environment and cold water can be a shock. Avoid watering from above as it can cause problems with the foliage. Instead, thoroughly soak the soil with the filtered, room temperature water. This helps the roots absorb nutrients and spread through the soil effectively.

What should I do if I give my Sea campion too much or too little water?

Overwatering and underwatering can harm the health of your Sea campion, but overwatering is the more common problem. When this plant gets too much water, its stems and leaves may wilt and turn yellow. Long-term overwatering can also result in diseases like root rot, mold, and mildew, which can be fatal. Underwatering is less likely for Sea campion, as it can tolerate drought fairly well. However, it can still occur, and in those cases, the leaves may become brittle and brown. It is important to promptly recognize signs of overwatering to prevent irreversible damage. If you notice early signs, reduce your watering schedule immediately. Additionally, check the soil quality and replace it with a loose, well-draining potting mix if it drains poorly. Conversely, if signs indicate underwatering, simply water regularly until the symptoms improve.

How often do I need to water my Sea campion?

If your Sea campion plant is in a pot, the most precise way to determine if it needs water is by checking the soil. Simply stick your finger into the soil and if the top two to three inches are dry, it's time to water it. If you are growing Sea campion outdoors in the ground, you can also use this method to test the soil. When the top few inches of soil have dried out, it's time to water. This method usually requires watering about once a week in spring and early fall. In extremely hot weather, watering may need to be increased to twice a week or more. However, it's worth noting that mature, well-established Sea campion plants have a remarkable ability to survive without much water.

How much water does my Sea campion plant need?

To water your Sea campion effectively, make sure to provide enough water without being overly cautious. Check the first two to three inches of soil, and if it's dry, give the plant a good, thorough soaking. It's important to ensure that the entire soil is thoroughly watered, causing any excess water to drain through the pot's drainage holes. If you don't see excess water draining, you may have not given enough water. However, be cautious not to let water accumulate in the soil as it can be harmful to the plant. Additionally, if the water doesn't drain properly through the pot, it could be a sign of poorly draining soil, which is detrimental to the plant's health. Finally, if the plant is outside, receiving about 1 inch of rain per week should be sufficient.

How do I water my Sea campion at different times while it's growing?

The water requirements of the Sea campion vary depending on its growth stages. In the beginning years or after transplanting, it needs more water due to the energy expended on developing new roots. These roots require extra moisture to support future growth. However, as the Sea campion matures, it will need less water. Additionally, during the blooming period, when the plant is developing flowers, it may require more water to sustain a significant amount of moisture.

☀️ Light Full sun

Sea campion does best when sunlight is the main light source, and it adapts well to settings where radiant solar energy has no substitute. Both excessive and insufficient light can harm its growth, indicating a natural preference for optimal solar exposure.

Ideal: Full sun
FAQ
What are the sunlight requirements for Sea Campion?

Sea Campion (Silene uniflora) requires full sun to thrive, necessitating above 6 hours of sunlight daily. It's crucial to observe your garden's sunlight patterns to identify areas that offer the ideal balance of light and shade, promoting the plant's wellbeing. Sea Campion benefits significantly from the dominant presence of sunlight, with neither excessive nor deficient light exposure, as both extremes can adversely impact its growth.

How do artificial lighting options support Sea Campion's growth indoors?

When natural sunlight is insufficient, particularly during winter or in less sunny spaces indoors, artificial lighting becomes crucial for Sea Campion's growth. Indoor plants benefit from adequate artificial lighting, enhancing their growth pace and overall health. LED lights are a preferred choice because they can be customized to supply specific light wavelengths needed by the plants. The recommended artificial lighting intensity varies with plant type: 30-50W/sq ft for full sun plants, 20-30W/sq ft for partial sun plants, and 10-20W/sq ft for full shade plants. Positioning the artificial light source 12-36 inches above the plant and ensuring it mimics natural daylight hours, typically 8-12 hours daily, are vital practices for fostering optimal growth.

What are the key symptoms of inappropriate lighting for Sea Campion?

Insufficient or excessive lighting can provoke several symptoms in Sea Campion, affecting its aesthetic and health. Inadequate light often leads to smaller new leaves, leggy or sparse growth due to stretched stems and leaves, faster leaf drop as the plant conserves resources, and slower or halted growth as the plant enters survival mode. Leaves might also show paler colors or irregular patterns, indicative of chlorophyll and nutrient deficiency. Conversely, excessive light can cause chlorosis, sunscald, leaf curling, wilting, and leaf scorching - all signs of stress due to overexposure to sunlight.

What solutions can mitigate lighting issues for Sea Campion?

To address lighting issues for Sea Campion, gradual adjustment to sunlight exposure is key. For indoor plants, progressively moving them to sunnier spots until they receive at least 6 hours of sunlight or making use of artificial lights such as desk or ceiling lamps for 8 hours daily can be effective. Outdoor plants also benefit from a gradual transition to sunnier locations to prevent sunburn. Additionally, reducing obstructions like pruning trees or transplanting smaller plants during their dormant period to sunnier areas with good drainage can significantly improve light access. However, it's essential to recognize that parts of the plant damaged by light deficiency may not recover, although new growth should be healthy with adjusted light exposure.

🌡️ Temperature 0–32.2°C

Sea campion comes from temperate climates and does best at temperatures of 32 to 89.6 °F (0 to 32 ℃). It can tolerate cooler conditions in winter but prefers moderate warmth during summer. For optimal growth, keep temperatures within this range year-round.

Ideal temperature: 0–32.2°C
FAQ
What is the native climate of Sea campion?

Sea campion, botanically known as Silene uniflora, is native to temperate climates. It thrives in temperatures ranging from 32 to 89.6 °F (0 to 32 °C), adapting well to the cooler temperatures of winter, while preferring the moderate warmth of summer. It's crucial to maintain the temperature within this range throughout the year for optimal growth. Sea campion possesses strong cold resistance, indicating that special frost protection measures are not generally required during winter. However, in regions where winter temperatures are anticipated to drop below -35°C, it's important to provide cold protection by covering the plant with soil or straw and watering it abundantly before the first freeze in autumn to ensure the soil stays moist and enters a frozen state. This preparation helps to avert drought and water scarcity for the plant during the colder seasons.

What should be done if Sea campion experiences temperatures below its ideal range?

Sea campion is notably cold-tolerant and functions best in temperatures above 0°C. Despite its resilience, if temperatures fall below -35°C, there might not be any visible changes during winter, but you may observe a decrease in sprouting or even no sprouting in the spring. To manage this, in spring, one should remove any plant parts that have failed to sprout, aiding in the plant's recovery and preparation for new growth.

How should Sea campion be cared for during high temperatures?

During the summer, it's essential to ensure that Sea campion is not exposed to temperatures above 32°C. Exceeding 35°C can cause the leaves to lighten in color, become prone to curling, susceptible to sunburn, and in extreme cases, the entire plant might wilt and dry out. To mitigate such effects, it's advisable to trim away any sunburned and dried-up parts of the plant. Moving the plant to a shaded location or utilizing a shade cloth to protect it from the midday and afternoon sun can be beneficial. Additionally, watering the plant in the morning and evening will help keep the soil moist and support the plant's health during hotter periods.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

For Sea campion, the primary time to apply fertilizer is in early spring when flowers are beginning to form. The correct fertilizer promotes stronger blooms and helps Sea campion produce attractive flowers. Fertilizing in early spring ensures high-quality flowers during the season and supplies energy for dormant growth stages.

FAQ
Why is it important to fertilize my Sea campion?

Fertilization is important for Sea campion and other plants because it provides essential nutrients for growth. While Sea campions generally have low fertilization needs and can sometimes survive without it, annual fertilization can be highly beneficial. It not only helps keep the plant alive but also promotes the production of more beautiful, longer-lasting flowers. Therefore, those who want their Sea campion to thrive should make sure to fertilize it annually.

When should I fertilize my Sea campion for the best results?

The best time to fertilize a Sea campion is in late winter to early spring. This is when the plant is transitioning from dormancy to active growth, so fertilization at this time promotes healthy growth and a strong start to the season. Fertilizing during the fall is also acceptable, but it is not advised to feed the Sea campion during summer or winter.

When is it not a good idea to add fertilizer to my Sea campion plant?

To ensure optimal growth of your Sea campion, only fertilize it during late winter and early spring. This plant has low fertilization needs and can thrive with only one annual feeding. Avoid fertilizing during spring, summer, and fall to prevent overfertilization and associated problems. However, if you missed fertilizing in spring, it is acceptable to feed the plant in fall. Additionally, refrain from fertilizing during winter since the Sea campion is in a dormant phase and does not produce new growth during this time.

What kind of plant food does my Sea campion need?

Sea campion can thrive with most general-purpose fertilizers that have balanced amounts of the main plant nutrients. However, certain nutrient blends can provide even greater benefits. Many gardeners believe that higher levels of phosphorus lead to stronger roots and better flowers, making a phosphorus-rich fertilizer a good choice for Sea campion since it is a flowering plant. Whether you choose a granular or liquid fertilizer, ensure it contains plenty of nutrients. In addition to manufactured fertilizers, you can also improve the soil for your Sea campion using organic methods like compost, manure, and similar materials. These can greatly contribute to creating a healthy growing medium for your Sea campion.

How can I give plant food to my Sea campion?

To fertilize a Sea campion, the most common method is to use granular or pellet fertilizer applied to the soil around the plant. It's important to fertilize during the transition from winter dormancy to active growth, so wait until early spring when shoots start to emerge before applying fertilizer. Alternatively, some people prefer using liquid fertilizer, which should be diluted with water before applying. In either case, it's recommended to moisten the soil before, during, and after fertilizer application.

🪴 Pot & Repot 2-3 years

To keep your 'sea campion' healthy, refresh it every 2-3 years in the spring. Use a moderately sized container filled with well-draining soil. After repotting, ensure the soil remains moist and provide plenty of sunlight to help it recover. Although 'sea campion' is hardy, avoid using compacted soil, as it can lead to root rot.

Suggested frequency: 2-3 years
✂️ Pruning

Sea campion benefits from regular pruning from early to late spring. This promotes dense growth and removes any unhealthy stems. Light trimming after the flowers have bloomed helps maintain the plant's shape and encourages more blooms. However, be careful not to over-prune, as this can harm the plant's foliage and increase the risk of disease.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Silene
Family
Caryophyllaceae
Hardiness Zone
3-8
Mature Height
15 cm
Mature Spread
20 cm
Leaf Color
Green, Gray, Variegated, Silver
Leaf Type
Semi-evergreen
Flower Color
White
Flower Size
2.54 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring
Harvest Time
Mid summer
Native Area
Europe, United Kingdom

Tags (11)

Common Names (3)

en Sea campion
en Bladder campion
en Strandglim