What is Sunscald on Plants?
Sunscald, also known as sunburn or scorch, is a common problem that affects plants, especially those grown indoors. It occurs when a plant is exposed to intense sunlight, causing damage to its leaves and stems. Sunscald can lead to unsightly marks, discoloration, and even death if left untreated. As an indoor plant enthusiast, it's essential to understand the causes, symptoms, and remedies for sunscald to keep your plants healthy and thriving.
Table of Contents
Causes of Sunscald on Plants
Sunscald can occur due to various reasons, including:
• Sudden exposure to direct sunlight, especially for plants that are accustomed to low-light conditions.
• Insufficient acclimation to outdoor conditions, leading to shock and damage.
• Inadequate shading or protection from intense sunlight.
• Poor air circulation, which can exacerbate the effects of sunscald.
• Overwatering, which can make plants more susceptible to sunscald.
Symptoms of Sunscald on Plants
The symptoms of sunscald can vary depending on the severity of the damage. Common signs include:
• White or yellowish patches or blisters on the leaves.
• Wilting or droopy leaves.
• Discoloration, such as brown or black spots, on the leaves or stems.
• Crispy or brittle leaves that are prone to breaking.
• Reduced growth or stunted development.
How to Identify Sunscald on Your Plant
To identify sunscald on your plant, inspect the leaves and stems carefully. Look for any unusual discoloration, patches, or blisters. Gently touch the affected areas to check for any signs of softening or brittleness. If you notice any of these symptoms, it's essential to take immediate action to prevent further damage.
How to Fix Sunscald on Your Plant
To fix sunscald on your plant, follow these steps:
• Move the plant to a shadier location, or provide shade using a sheer curtain or shade cloth.
• Prune damaged leaves or stems to prevent the spread of disease and encourage new growth.
• Adjust your watering schedule to ensure the soil is consistently moist but not waterlogged.
• Improve air circulation around the plant by increasing the distance between plants or using a fan.
• Apply a balanced fertilizer to promote healthy growth and recovery.
Preventing Sunscald on Your Plant
Prevention is always better than cure when it comes to sunscald. To prevent sunscald on your plant, follow these tips:
• Gradually acclimate your plant to outdoor conditions over a period of 7-10 days.
• Choose a location with filtered or dappled sunlight, especially for plants that require low-light conditions.
• Use a UV-filtering window film or shade cloth to reduce the intensity of direct sunlight.
• Monitor your plant's temperature and humidity levels to ensure they are within the recommended range.
• Avoid overwatering, and ensure the soil drains well to prevent waterlogged soil.
Common Plants That Are Prone to Sunscald
Some plants are more susceptible to sunscald than others. These include:
• Ferns and peace lilies, which prefer low-light conditions.
• Succulents and cacti, which can be sensitive to intense sunlight.
• African violets and begonias, which require filtered sunlight.
• Herbs like basil and mint, which can be scorched by direct sunlight.
Sunscald is a common problem that can affect any plant, but with proper care and attention, you can prevent and fix it. By understanding the causes, symptoms, and remedies for sunscald, you can keep your plants healthy and thriving. Remember to monitor your plant's condition regularly, and take prompt action if you notice any signs of sunscald. With the right care, your plants will flourish, and you'll enjoy the many benefits of indoor gardening.
Frequently Asked Questions
What is sunscald on a plant?
Sunscald on a plant, also known as sunburn or scorch, is a common problem that occurs when a plant is exposed to intense direct sunlight, especially if it's not accustomed to it. This can cause damage to the plant's leaves, stems, and flowers, leading to discoloration, blisters, and even death.
What are the symptoms of sunscald on a plant?
The symptoms of sunscald on a plant can vary depending on the severity of the damage, but common signs include white or brown blisters on the leaves, yellowing or browning of the leaves, wilting, and a soft, mushy texture. In severe cases, the plant may drop its leaves or flowers.
How do I know if my plant has sunscald?
Check your plant for any of the symptoms mentioned above. If you notice any unusual changes in the appearance or texture of the leaves, stems, or flowers, it's possible that your plant has sunscald. Inspect the plant carefully, and if you're still unsure, consult with a gardening expert or take the plant to a nursery for further diagnosis.
What causes sunscald on a plant?
Sunscald on a plant is typically caused by sudden exposure to intense direct sunlight, especially if the plant is not acclimated to it. This can happen when a plant is moved from a low-light area to a bright, sunny spot, or when the seasons change and the sun becomes stronger. Other factors, such as temperature fluctuations, dry soil, and poor air circulation, can also contribute to sunscald.
How can I prevent sunscald on my plants?
To prevent sunscald, make sure to gradually acclimate your plants to direct sunlight, especially if they're not used to it. Start by providing filtered or dappled light, and gradually increase the duration and intensity of the sunlight over time. Also, ensure your plants are well-watered, fertilized, and receive good air circulation to help them tolerate the sun's rays.
Can sunscald be treated?
Yes, sunscald can be treated, but the success of treatment depends on the severity of the damage. Mild cases of sunscald may respond to simple remedies like pruning, watering, and providing shade. More severe cases may require more extensive treatment, such as repotting the plant in a shadier location, using a sunblock or sunscreen, or applying a topical treatment to the affected areas.
How do I treat sunscald on my plant?
Treatment for sunscald typically involves a combination of the following steps: prune any damaged leaves or stems, provide shade to prevent further damage, water the plant thoroughly to replenish moisture, and fertilize the plant to promote healthy growth. In severe cases, you may need to repot the plant in a shadier location or use a sunblock or sunscreen to protect the plant from further damage.
Will my plant recover from sunscald?
The prognosis for a plant with sunscald depends on the severity of the damage. If caught early, most plants can recover from mild cases of sunscald with proper treatment. However, more severe cases may result in permanent damage or even death. It's essential to monitor your plant's progress closely and adjust your treatment strategy as needed.
How long does it take for a plant to recover from sunscald?
The recovery time for a plant with sunscald varies depending on the severity of the damage and the effectiveness of treatment. Mild cases may resolve within a few days to a week, while more severe cases may take several weeks or even months to recover. Be patient, and with proper care, your plant should eventually recover.
Can I prevent sunscald on seedlings?
Yes, you can prevent sunscald on seedlings by providing them with filtered or dappled light, especially during the first few weeks after germination. As the seedlings grow, you can gradually increase the duration and intensity of the sunlight. Also, make sure to keep the soil consistently moist and fertilize the seedlings regularly to promote healthy growth.
Why do my plants get sunscald in the winter?
Plants can get sunscald in the winter due to the low angle of the sun, which can cause intense direct sunlight to stream through windows or glass doors. This can be especially problematic for plants that are not acclimated to direct sunlight. To prevent winter sunscald, provide shade for your plants during the winter months, or move them to a shadier location.
Can I use a sunblock or sunscreen on my plants?
Yes, you can use a sunblock or sunscreen on your plants to protect them from sunscald. There are various products available on the market specifically designed for plants, or you can use a homemade solution like a mixture of water and kaolin clay. Apply the sunblock or sunscreen according to the product's instructions or recipe.
How often should I water my plant with sunscald?
Water your plant with sunscald thoroughly, but make sure not to overwater. Check the soil daily, and water only when the top inch of soil feels dry to the touch. Overwatering can exacerbate the damage and lead to root rot.
Can I fertilize my plant with sunscald?
Yes, you can fertilize your plant with sunscald, but wait until the plant has started to recover and show signs of new growth. Use a balanced, water-soluble fertilizer at half the recommended strength to avoid burning the roots.
Will pruning help my plant recover from sunscald?
Yes, pruning can help your plant recover from sunscald by removing damaged leaves or stems and promoting healthy growth. Prune only the affected areas, and make clean cuts just above a node to encourage new growth.
Can I move my plant outside after it's recovered from sunscald?
Yes, you can move your plant outside after it's recovered from sunscald, but make sure to acclimate it gradually to outdoor conditions. Start by moving the plant to a shaded area outdoors and gradually increase the duration and intensity of direct sunlight over time.
How can I protect my plant from sunscald in the future?
To protect your plant from sunscald in the future, provide filtered or dappled light, especially during peak sun hours. Use a sheer curtain or shade cloth to filter the sun's rays, and consider using a sunblock or sunscreen on your plant. Also, ensure your plant is well-watered, fertilized, and receives good air circulation to help it tolerate the sun's rays.
Is sunscald contagious?
No, sunscald is not contagious and cannot be spread from one plant to another. It's a physical response to environmental stress, and each plant must be treated individually.
Can I use a humidifier to help my plant recover from sunscald?
Yes, using a humidifier can help your plant recover from sunscald by maintaining a humid environment that promotes healthy growth. However, make sure not to over-humidify, as this can lead to root rot and other problems.
Will sunscald affect my plant's ability to bloom?
Sunscald can affect your plant's ability to bloom, especially if the damage is severe. However, with proper treatment and care, your plant should eventually recover and produce flowers again.
Can I use a fan to help my plant recover from sunscald?
Yes, using a fan can help your plant recover from sunscald by improving air circulation and reducing heat stress. However, make sure to position the fan so that it doesn't blow directly on the plant, which can cause further damage.
How can I prevent sunscald on my succulents?
Succulents are particularly prone to sunscald, so it's essential to provide them with filtered or dappled light, especially during peak sun hours. Use a sheer curtain or shade cloth to filter the sun's rays, and consider using a sunblock or sunscreen on your succulents. Also, ensure your succulents are well-watered, fertilized, and receive good air circulation to help them tolerate the sun's rays.
Indoor Plant Care A-Z
Adiantum Fragrans
Aechmea Blue Rain
Aechmea Fasciata
Aeschynanthus Marmoratus
Aeschynanthus Radicans Gesneriad
African Mask
African Spear
African Violet
Air Plant
Alocasia Amazonica
Alocasia Araceae
Aloe
Aloe Vera
Aloe Vera
Aloe Vera Barbadensis
Angel Wings Cactus
Anthurium Andraeanum
Anthurium Crystallinum
Arabian Coffee
Areca Palm
Aroid Palm
Arrowhead Ivy
Arum Lily
Asparagus Densiflorus 'Sprengeri'
Asparagus fern
Asparagus Setaceus
Aspidistra Elatior
Asplenium Antiquum
Asplenium Nidus
Athyrium Filix-Femina
Austrailian Ivy Tree
Austrocephalocereus Dybowskii
Austrocylindropuntia subulata
Azalea Plant
Baby Doll Ti
Baby Rose
Baby Tears
Baby Toes
Baby's Tears
Bamboo Palm
Banana Palm
Banana Plant
Banana Tree
Barbados Aloe
Begoniaceae Maculata
Bengal Fig
Benjamin Tree
Benjamin's Fig
Beringin
Bilbo Cactus
Bird Of Paradise
Bird's Nest Fern
Bird's Tongue Flower
Birds Nest Fern
Blue Pothos
Blue Rain Bromeliad
Blue Rain Plant
Blue Sansevieria
Blue Torch Cactus
Bonsai Ficus
Boston Fern
Boston Fern
Boy Flower
Brighamia insignis
Bromeliad
Buddha's Hand
Bunny Cactus
Burrageara Orchid X Oncidium
Burro's Tail
Butterfly Palm
Cabbage on a Stick
Cabeça-branca
Cactus
Caladium Lindenii
Caladium Magnificum
Calathea
Calathea Marantaceae
Calla Lily
Cambria
Cambria Orchid
Canna Leaved Strelitzia
Cape Jasmine
Cape Primrose
Cast Iron Plant
Cathedral Cactus
Cathedral Plant
Cereus Peruvianus
Ceropegia Woodii
Ceropegia Woodii 'Marlies'
Chain of Hearts
Chain of Pearls
Chamaedorea Elegans
Chinese Ape
Chinese Money Plant
Chinese PLant
Chinese Taro
Chlorophytum Comosum
Christmas Cactus
Christmas Kalanchoe
Cladophora
Cladophora Ball
Climbing Asparagus
Codiaeum Variegatum Var. Pictum
Coffea Rubiaceae Arabica
Coffee Bean
Coffee Plant
Common Purslane
Common Yucca
Cordyline Fruticosa
Corn Plant
Crab Cactus
Crane Flower
Crassula Arborescens
Crassula Hobbit
Crassula Ovata
Croton
Crystal Anthurium
Ctenanthe
Ctenanthe Pilosa Golden Mosaic
Curly Locks Cactus
Curtain Fig
Cycas Revoluta
Cylindrical Snake Plant
Date Palm
Day Flower
Delicious Monster
Devil's Ivy
Devil's Tongue
Devils Backbone
Dieffenbachia Araceae
Donkey's Tail
Dracaena
Dracaena Fragrans
Dracaena Fragrans Golden Coast
Dracaena Fragrans Janet Craig
Dracaena Fragrans Steudneri
Dracaena Magenta
Dracaena Marginata
Dracaena Sanderiana
Dragon Plant
Dragon Scale Alocasia
Dragon Tree
Dumb Cane
Dwarf Arrowhead Vine
Dypsis Lutescens Chrysalidocarpus
Easter Cactus
Elephant Bush
Elephant Ear
Elephant Yucca
Emerald Palm
English Ivy
Entangled Hearts
Epiphyllum Anguliger
Epiphyllum guatemalensis
Epipremnum Aureum
Epipremnum Aureum Neon
Epipremnum Pinnatum
Epipremnum Pinnatum Aureum
Eternity Plant
Euphorbia Enopla
Euphorbia Trigona
Euphorbia Trigona Rubra
Eves Pin Cactus
False African Violet
False Shamrock
Ficus Benghalensis 'Audrey'
Ficus Benjamina
Ficus Elastica
Ficus Elastica 'Ruby'
Ficus Ginseng
Ficus Microcarpa
Fiddle Leaf Fig
First Aid Plant
Fishbone Cactus
Five Holes Plant
Flaming Katy
Flaming Sword
Flamingo Flower
Flamingo Lily
Flamingo Plant
Florist Kalanchoe
Flowering Cactus
Freckle Face
Freckle Plant
French Peanut
Friendship Plant
Garden Ivy
Garden Rose
Gardenia Jasminoides
Giant Bird Of Paradise
Golden Cane
Golden Neon Pothos
Golden Pothos
Goldfish Plant
Guiana Chestnut
Guzmania
Guzmania Bromeliaceae
Happy Leaf Pothos
Hardy Elephant's Ear
Hardy Elephant's Ear
Hawaiian Ti Plant
Haworthia
Haworthia Rafiki
Heart Leaf
Hedera Helix
Hedera Helix Variagata
Hedera Hibernica
Heptapleurum Actinopyllum
Hobbit Jade
Horrida Plant
Horse's Tail
House Plant Cuttings For Propagation
Hoya Carnosa
Hurricane Plant
Hylotelephium Sieboldii
Hypoestes Phyllostachya
Inch Plant
Irish Ivy
Jade Plant
Jade Plant
Java Fig
Java Tree
Java Willow
Jelly Bean Plant
Jungle Boogie
Jungle Bush
Kalanchoe Blossfeldiana
Kalanchoe Delagoensis x Daigremontiana
Kleinia stapeliiformis
Korean Rock Fern
Lace Fern
Laceleaf
Lady Fern
Lake Ball
Lamb's Tail
Lemon Geranium
Leopard Lily
Lipstick Plant
Little Hogweed
Love Plant
Lucky Bamboo
Madagascar Jasmine
Maidenhair Fern
Malabar Chestnut
Malayan Banyan
Maranta Kerchoveana
Maranta Leuconeura
Maranta Marisela
Mason Congo Sansevieria
Measles Plant
Medicinal Aloe
Medicine Plant
Mexican Breadfruit
Milk Barrel Cactus
Miltonia Orchid
Ming Aralia
Mini Philo
Mini Swiss Cheese Vine
Missionary Plant
Mistletoe Cactus
Money Plant
Money Tree
Monkey Jars
Monstera
Monstera Adansonii
Monstera Deliciosa
Monstera Minima
Moss Ball
Moss Rose
Moth Orchid
Mother In Law's Tongue
Mother Of Thousands
Musa
Musa Basjoo Tropicana
N'Joy Pothos
Nemantanthus Gregarius
Nematanthus gregarious
Neon Devil's Ivy
Neon Pothos
Nepenthes Alata
Nephrolepis Exaltata
Never Never Plant
Night Blooming Cactus
Octopus Tree
Odontoglossum Orchid
Oilcloth Flower
Old Man Cactus
Oncidium Orchid
Opuntia Microdaisy Albata
Orchidaceae Phalaenopsis
Oxalis Triangularis
Pachira Aquatica
Pancake Plant
Pansy Orchid
Parasol Plant
Parlor Palm
Parlour Palm
Pass-it-along Plant
Passiflora Caerulea
Passionflower
Patio Rose
Peace Lily
Peace Lily
Peacock Plant
Pearl and Star Plant
Pelargonium Zonal
Peperomia Deppeana × Quadrifolia | Peperomia Tetraphylla
Peperomia Polybotrya
Peperomia Prostrata
Peruvian Apple Cactus
Philodendron
Philodendron 'Monkey Mask'
Philodendron Hederaceum
Philodendron Minima
Philodendron Scandens
Phoenix Canariensis
Pickle Cactus
Pickle Plant
Pilea Depressa
Pilea Mollis
Pilea Peperomoides
Pilocereus Azureus
Pincushion Euphorbia
Pink Jelly Beans
Pink Pork and Beans
Pink Splash
Pink Violet
Pitcher Plant
Polka Dot Begonia
Polka Dot Plant
Polyscias Fruticosa
Polystichum Tsussimense
Portulaca Umbraticolata
Portulacaria Afra Mediopicta
Pot Belly Fig
Pothos
Prayer Plant
Provision Tree
Purple Rain Plant
Purple Shamrock
Purple Wood Sorrel
Rabbit Ears Cactus
Rabbit's Foot
Rabbit's Tracks
Radiator Plant
Raindrop Money Plant
Raindrop Pilea
Rattlesnake Plant
Red Rhipsalis Cactus
Red Rubber Plant
Rhapidophora Tetrasperma
Rhipsalis
Rhipsalis Agudoensis
Rhipsalis Agudoensis
Rhipsalis Heteroclada
Rhipsalis Horrida
Rhipsalis Occidentalis
Rhododendron Inga
Ric Rac Orchid Cactus
Ric-Rac Cactus
Rosa
Rosary Plant
Rosary Vine
Rough Fern
Rubber Plant
Saba Nut
Sago Palm
Saint Barbara's Sword
Saint Paulia
Saint Paulia
Sansevieria Ehrenbergii
Sansevieria Trifascia
Sansevieria Trifasciata
Sarracenia
Satin Pothos
Savannah Geranium
Schefflera Arboricola
Schlumbergera Bridgesii
Scindapsus Pictum Argyraeus
Scindapsus Pictus
Sedum Morganianum
Sedum Rubrotinctum Variegata
Senecio
Senecio Herrianus
Senecio Rowleyanus
Senecio Stapeliiformis
Shark Fin Plant
Shark's Tooth Philodendron
Silver Dollar Plant
Silver Jade Plant
Silver Pothos
Silver Vase
Small-Leaved Fig
Small-Leaved Rubber Plant
Snake Plant
Snake Plant
Snake Tongue
Spanish Moss
Spathiphyllum
Spathiphyllum wallisii
Spear Sansevieria
Spider Plant
Spider Plant
Spiderwort
Spineless Yucca
Split-leaf Philodendron
Spotted Begonia
Star Plant
Stephanotis Floribunda
Stick Yucca
Stranging Fig
Strelitzia Alba
Strelitzia Nicolai
Strelitzia Reginae
Streptocarpus Saxorum
String of Beads
String of Hearts
String of Pearls
String of Tears
String of Turtles
Strings
Surprise Miltoniopsis
Sweetheart Plant
Sweetheart Plant Brazil
Swiss Cheese Plant
Swiss Cheese Vine
Sword Fern
Syngonium Erythrophyllum
Syngonium Nephphytis
Tailflower
Tears Pilea
Thanksgiving Cactus
Ti Leaf
Tiger Tooth Philodendron
Tillandsia
Tillandsia Ionantha
Tradescantia Albiflora
Tradescantia Commelinaceae Multiflora
Trailing Jade
Tropical Laurel
Tropicana Palm
Trout Begonia
True Aloe
Trumpet Lily
Trumpet Pitcher Plant
Trumpet Plant
Turtle Strings
UFO Plant
Umbrella Tree
Urn Plant
Variegated Chain of Hearts
Variegated Entangled Hearts
Variegated Laurel
Variegated Rosary Plant
Variegated Rosary Vine
Variegated Rubber Plant
Variegated String of Hearts
Vriesea splendens
Vuylstekeara Orchid
Wandering Dude
Wandering Jew
Wax Plant
Weeping Fig
Weeping Laurel
Whale Fin Plant
White Bird Of Paradise
White Crane Flower
White Flowered Wild Banana
Wild Banana
Wild Cape Banana
Yellow Palm
Yucca Elephantipes
Zamioculcas Zamiifolia
Zantedeschia
Zanzibar Gem
Zebra Basket Vine
Zebra Cactus
Zebra Lipstick Plant
Zebra Plant
Zebrina Pendula
Zigzag Cactus
Zuzu Plant
ZZ Plant
ZZ Plant
Harley Jennings
Harley Jennings is a renowned indoor plant expert with over 15 years of hands-on experience working with some of the UK's top botany and garden centers. Harley's passion for indoor plants blossomed early in his career, leading him to become a trusted authority in the field. He has spent years nurturing plants, researching the best care practices, and sharing his extensive knowledge with fellow plant enthusiasts.
Harley is the author of the comprehensive guide "The Complete Guide to Indoor Plant Care," where he combines his wealth of experience with a deep love for greenery. This guide provides readers with everything they need to know about indoor plants, from selection and placement to watering, feeding, and troubleshooting common issues.
In addition to his writing, Harley plays a pivotal role in the development of the Botanic Beam app, a revolutionary tool that offers plant lovers a wealth of information in one convenient place. The app simplifies plant care, providing tailored advice, reminders, and expert tips to help users create thriving indoor gardens.
Outside of his professional life, Harley enjoys urban beekeeping, finding a unique connection between nurturing plants and supporting local ecosystems. His relatable, down-to-earth approach makes him a favorite among both novice and experienced indoor gardeners. Whether through his guide or the Botanic Beam app, Harley Jennings continues to inspire and educate, helping people transform their homes into green sanctuaries.