Crataegus opaca — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Crataegus opaca

Crataegus Opaca

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ON THIS PLANT

Crataegus opaca, known as the western mayhaw, is a shrub or small tree of the southern United States. It is one of several species of hawthorn with fruits known as "mayhaws".

A note from PlantMom

Western mayhaw shows strong resistance to disease and is typically not susceptible to illnesses. In terms of upkeep, this plant is fairly low-maintenance. When grown outdoors it needs little watering, and larger specimens usually do not require pruning. However, smaller plants should be trimmed after they finish blooming. Western mayhawt is suitable for anyone with outdoor space, such as a garden or a deck, and does not demand much gardening experience.

— PlantMom
CARE GUIDE

How to keep Crataegus Opaca.

Light

Western mayhaw comes from open habitats, such as sunny meadows and forest edges, that provide abundant light. It performs best in Full Sun but can also tolerate Partial Sun, adjusting well to different sunlight conditions.

Water

The Western mayhaw thrives in temperate regions where it benefits from periodic moisture and shows a moderate tolerance to drought. To encourage healthier fruit production during the growing season, it is recommended to water the plant every three weeks. As a deciduous plant, the Western mayhaw flourishes outdoors, provided it is planted in well-drained soil.

Temperature

Western mayhaw is highly adaptable to different climates, from very hot summers to cold winters. Still, it has an ideal temperature range for growth. If temperatures get too high, the plant is susceptible to heat and humidity stress, which can kill it. In areas where temperatures near the lower end of its cold tolerance, providing insulation is important to protect the plant.

Fertilizer

The Western mayhaw plant needs adequate nutrients to produce fruit at its best. Fertilize in early spring to encourage new growth and bloom development. Regular feeding keeps the plant healthy, yields more flavorful fruit, and prevents nutrient-deficiency problems like yellowing leaves and poor fruit production.

Pruning

The Western mayhaw is characterized by its thorny branches and bright red fruits. To maintain its shape and health, prune the plant in early spring by removing dead or crossing branches. This practice enhances air circulation and encourages fruit production. Additionally, thinning the branches helps reduce pests and promotes vigorous growth, thus ensuring the plant's robustness and enhancing its ornamental qualities.

Pot & Repot

For optimal growth, Western mayhaw needs pots with excellent drainage. Proper drainage prevents waterlogging, which can cause root rot and other health problems for the plant.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree, Shrub
Life Cycle
Perennial
Genus
Crataegus
Family
Rosaceae
Hardiness Zone
5-9
Mature Height
3.66 m to 10.97 m
Mature Spread
4.88 m to 7.92 m
Leaf Color
Dark Green, Forest Green
Leaf Type
Deciduous
Flower Color
White
Flower Size
1.02 cm to 2.03 cm
Bloom Time
Mid spring, Late spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Early fall, Mid fall
ALSO KNOWN AS

Other names.

en Apple haw en Riverflat hawthorn en Western mayhaw en River-flat hawthorn
FREQUENTLY ASKED

Reader questions.

How should I water my Western mayhaw plant?

To ensure excellent root development, place a garden hose at the base of the plant. Avoid spraying the leaves directly, especially if they are outdoors and exposed to direct sunlight. Instead, focus on watering the roots using bubblers or soaker hoses. When adding or removing plants, make sure the entire garden or bed is covered by the soaker hoses. After watering, drain any excess water and allow the soil to dry before watering again. To prevent diseases, water at ground level rather than spraying the foliage. On sunny days, consider spraying the entire bush with water. Whether the mayhaw plant is in a pot or planted in the ground, it is best to water deeply rather than lightly sprinkling.

What are the sunlight requirements for Western Mayhaw?

Western Mayhaw requires full sun, which means it needs above 6 hours of sunlight daily, but it can also tolerate partial sun, approximately 3-6 hours of sunlight. It's essential to observe how sunlight moves through your garden to ensure your plants receive the ideal balance of light and shade for optimal growth. These conditions mimic its natural habitat in sunny meadows and forest edges, allowing it to thrive in varying light conditions.

What is the Western mayhaw?

The Western mayhaw is a plant known botanically as Crataegus opaca. It doesn't have specific essentials or symptom information provided here, but it's known for its significance in certain regions and uses, possibly including culinary or medicinal.

What should I do if I give Western mayhaw plant too much or too little water?

An overwatered Western mayhaw can show signs of yellowing, leaf drop, and wilting. The plant may also appear dull and unhealthy with soft, mushy stems. It's important to adjust your watering schedule if you notice these signs. However, wilting can also be a sign of under watering, characterized by crispy, dry leaves. In this case, it's necessary to check the soil and give the plant a thorough watering when dry. Although enough water will help the Western mayhaw recover, the damaged root system may result in continued yellowing and dryness. Once the plant returns to normal, the yellowing of leaves will stop. For Western mayhaws indoors, it's crucial to check the moisture levels and avoid overwatering. Look out for black spots, which may indicate overwatering. In such cases, allow the soil to dry by refraining from watering for a few days. Overwatering can lead to root rot, so if you observe discolored and slimy roots, consider transferring the plant to a different pot. It's important to prevent root rot by avoiding excessively soggy soil. When planting Western mayhaws outdoors, dig a little deeper and check the soil moisture with your fingers. If the soil is too dry, it may indicate underwatering. Adequate watering is necessary to aid the plant's recovery.

How do I use artificial lighting for indoor Western Mayhaw plants?

When natural sunlight is not sufficient, especially during winter or in shaded areas, artificial lighting can support the growth of indoor Western Mayhaw plants. LED lights are recommended because they can be customized to provide the specific light wavelengths your plants need. Full sun plants should have 30-50W/sq ft, partial sun plants require 20-30W/sq ft, and full shade plants need 10-20W/sq ft of artificial light. The artificial light source should be placed 12-36 inches above the plant, mimicking natural sunlight conditions, and most plants will benefit from 8-12 hours of light per day.

How frequently do I need to water my Western mayhaw?

The Western mayhaw prefers deep watering, especially when planted in pots. The water storage in pots is limited, so watering every 3 to 5 days is necessary, especially in cold regions. Water in the morning when the soil is dry, both indoors and outdoors. Check the soil inside and if the top 2-3 inches are dry, water the plant fully. During hot days, monitor the moisture daily as the heat can quickly dry out the soil. If you have a garden, irrigation is necessary. In hot climates, water once a week when about 2 to 3 inches of soil is dry. Be mindful of rainwater and prevent excessive watering to avoid root rot. Add 3 to 4 inches of mulch when the Western mayhaw is outdoors to conserve water. In sandy soil, water more frequently as it drains faster. Clay soil requires less frequent watering, allowing the plant to dry for 2-3 days to prevent root rot. Keep track of watering dates and observe drooping leaves as an indicator of potential delays.

What are symptoms of inadequate light in Western Mayhaw?

Western Mayhaw shows several symptoms when experiencing inadequate light, including smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, and lighter-colored new leaves. Too much sunlight can also harm, leading to symptoms like chlorosis (loss of green color in leaves), sunscald (damaged leaves or stems), leaf curling, wilting, and leaf scorching. Monitoring your plant for these symptoms can help in diagnosing and correcting light-related issues.

How much water should I give my Western mayhaw?

To properly care for the Western mayhaw, it generally needs about a gallon of water on a regular basis. If you have potted plants, water them deeply until you see water dripping from the bottom of the pot. Wait for the soil to dry before watering again. To know how much water you've given your plant in a week, you can use a water calculator or a moisture meter. During the flowering period, provide plenty of water, but allow the moisture to evaporate to avoid root rot. If the Western mayhaw is planted outdoors and receives sufficient rainfall, additional watering may not be necessary. However, when the tree is young or newly planted, make sure it gets 1-2 inches of rain each week. As the Western mayhaw grows, it can rely solely on rainfall for its water needs. Only in extremely hot weather or when there is no rain for 2-3 weeks should you consider giving the tree a thorough watering during cooler parts of the day to prevent heat damage. Additional watering may be required during prolonged dry spells.

What are the solutions for Western Mayhaw experiencing light-related issues?

For optimal growth, gradually introduce your Western Mayhaw to sunnier spots, aiming for at least 6 hours of direct sunlight a day for indoor plants, and utilize south-facing windows with curtains open during daylight. For plants not easily moved or too large, consider artificial lighting for at least 8 hours a day. Outdoors, adjust plant positioning gradually to prevent sunburn. Note that parts of the plant damaged by insufficient light may not recover, but new growth will be healthy post-adjustment. Additionally, for minimizing obstructions, observe and alter the environment around your plants, such as pruning trees blocking sunlight, and consider transplanting smaller plants during their dormant period for better light exposure and drainage.

Should I change how often I water my Western mayhaw based on the seasons or weather?

The Western mayhaw needs rain for outdoor growth, but if it's consistently dry, you will need to water it. In the spring and fall, keep the soil moist but not soggy. Alternating between dry and moist conditions is beneficial for the plant. In the summer, hot weather and lack of rainfall may require more frequent watering to keep the plant moist. During winter, the Western mayhaw needs less water as it goes dormant. Use well-draining soil and terracotta pots to help with evaporation. During the dormant period, rely on fall and winter rains for watering. In the spring, encourage growth and blooming when the temperature warms up. Good drainage is crucial, especially in winter. When planted in pots, water regularly, especially during summer. Deep soaking the roots once or twice a week is better than shallow sprinkling. Avoid letting the plant dry out completely, even during dormancy. Don't let the plant sit in water for too long, as it can lead to death. Apply mulch to reduce stress, conserve water, and promote healthy blooms.

What do I need to be careful with when I water my Western mayhaw in different seasons, climates, or during different growing times?

When planting Western mayhaw in the ground, it relies mostly on rain. However, if there is no rainfall for 2-3 weeks, you should consider giving the plants a deep watering. It is best to water them in the morning during the summer to avoid stressing the roots with a large temperature difference. Avoid watering the bushes when it is too hot outside. Mulch them in the spring when the ground is not too cold. The age of the plants is important, as newly planted ones are more likely to fail if they lack water. Once established, reduce watering during the fall and winter, especially if there is water-retaining material in the soil. Dry winds in these seasons can dry out the plants and put newly planted ones at risk of drought. Windy seasons require more watering. Plants in pots dry out faster, so they need more water. Look out for signs of less blooming and drying leaves, as this indicates they need more water. Watering potted plants can be complex and the frequency fluctuates. Avoid allowing pot-planted plants to sit in water by not using containers with saucers, bowls, or trays. Overwatering in the fall can cause mottled or yellowish foliage. Be cautious of overwatering regardless of the current climate or season. During the flowering months, consider increasing watering frequency, but once the plants are fully grown, give them a rest. Water them with an adequate amount once every 3 to 5 days, but avoid sticking to a strict schedule. Check the soil moisture by using your finger or a moisture meter. Be careful not to overwater or underwater, as this can cause root rot and ultimately lead to the plants dying.

Why do I need to water my Western mayhaw?

To properly nourish the Western mayhaw plant, it is important to water it adequately. The amount of water needed depends on the weather conditions and soil type in your area. While this species thrives in moist soil, it cannot tolerate excessive water. Therefore, it is crucial to find the right balance. When planting the Western mayhaw in the ground, be sure to provide enough mulch and avoid under-watering. In pots, water generously so that the base remains moist for optimal blooming. If you are growing them for their foliage, aim to water them to a depth of 10 to 20 inches to promote continued growth. During rainy periods, you can refrain from watering as the plants will obtain the necessary nutrients from the rainwater.

PLATES
Crataegus opaca leaf
PLATE 01 · leaf
Crataegus opaca other
PLATE 02 · other
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