Vitis Aestivalis
SPECIMEN · FROM THE LIBRARY
Vitis Aestivalis

Vitis Aestivalis

Photo · no rights reserved, uploaded by Reuven Martin COURTESY INATURALIST
ON THIS PLANT

Vitis aestivalis, commonly known as the summer grape or pigeon grape, is a grapevine species native to eastern North America. This deciduous vine can grow up to 30 feet long, with woody stems that can reach up to 4 inches in diameter. Its large, heart-shaped leaves have serrated edges and turn yellow or red in the fall.

The summer grape produces small clusters of dark purple grapes. These grapes are edible but not commonly used for winemaking due to their high acidity. Instead, they are often consumed by birds and other wildlife.

Vitis aestivalis prefers well-drained soils and full sun exposure but can tolerate some shade. Once established, it is drought-tolerant, though it may require regular watering during prolonged periods of drought.

Historically, Native Americans have used various parts of this plant for medicinal purposes. It has been employed to treat ailments such as diarrhea, dysentery, fever, headaches, and rheumatism.

Overall, Vitis aestivalis is an attractive vine with ornamental value due to its large leaves and dark purple fruit clusters. Additionally, it provides food sources for wildlife and is relatively low maintenance once established in suitable growing conditions.

THE NAME

Summer Grape: The name "summer grape" likely comes from the fact that these grapes ripen in the summer. This distinguishes them from "winter grapes." Although we can't definitively prove the origin of the name, the timing of their ripening is the most probable reason.

A note from PlantMom

Summer grape is highly resistant to disease and generally not susceptible to illnesses. In terms of care, this plant is fairly low maintenance. When grown outdoors it needs only minimal watering, and larger plants typically do not require pruning. Smaller plants, however, should be pruned after they have finished blooming. Summer grape is appropriate for anyone with outdoor space, such as a garden or deck, and does not demand much gardening experience.

— PlantMom
CARE GUIDE

How to keep Vitis Aestivalis.

Light

Summer grape does best with full sun exposure, though it can tolerate locations that get a moderate amount of light. Coming from sunny habitats, the plant grows more vigorously in those conditions. However, too little or too much sunlight can result in poor growth or even damage to the plant.

Water

Summer grapes flourish in temperate regions, as they can moderately tolerate drought, although they prefer consistent moisture without becoming waterlogged. For optimal health, it is advised to water them weekly. These grapes are usually cultivated outdoors and effectively use the available water throughout the growing season to support the development of their foliage and fruit.

Humidity

This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.

Temperature

Summer grape originates from warm and temperate areas and does well at temperatures of 50 to 95 ℉ (10 to 35 ℃). In winter, it should be kept at 30 to 55 ℉ (-1 to 13 ℃) to accommodate seasonal changes.

Fertilizer

The summer grape plant needs adequate nutrients for optimal fruit production. Fertilize in early spring to encourage new growth and bloom development. Regular feeding keeps the plant healthy, produces more flavorful fruit, and prevents nutrient-deficiency problems like yellowing leaves and poor fruiting.

Pruning

Pruning summer grapevines is crucial for promoting healthy growth and preventing diseases. Important practices include bud picking, flower thinning, and winter pruning. To maintain strong branches, remove any excess buds and shoots, thin out flower spikes before they bloom, and ensure that only the healthiest fruiting branches are kept. For larger cuts, use protective agents to safeguard the plant.

CHARACTERISTICS

Botanical profile.

Plant Type
Vine
Life Cycle
Perennial
Hardiness Zone
6-9
Mature Height
10.06 m
Mature Spread
0.91 m to 1.83 m
Leaf Color
Green
Leaf Type
Deciduous
Flower Color
Yellow, Green, Gold
Flower Size
2.54 cm
Bloom Time
Late spring, Early summer
Planting Time
Summer
Harvest Time
Mid summer
ALSO KNOWN AS

Other names.

en Summer grape en Cynthiana grape en Bunch grape en Pigeon grape en Chicken grape en Rusty grape en Arkansas grape en Norton grape en Swamp grape en Small Grape en Wild Grape en Jones ar انگور
FREQUENTLY ASKED

Reader questions.

What's the best way to water my grape plant during the Summer?

To promote excellent root development, it's recommended to place a garden hose at the base of the plant. Avoid spraying the leaves directly, as this can be harmful. If the plant is outdoors and exposed to direct sunlight, make sure to water the leaves more often. To moisten the roots, you can also use bubblers that attach to each plant. Soaker hoses are useful for covering the entire garden or bed and pushing the roots deeper, especially when adding or removing plants. Remember to drain any excess water and allow the soil to dry before watering again. Watering at ground level is important to prevent diseases. On a sunny day, it may be beneficial to spray the entire bush with water. Whether your plant is potted or in-ground, keep in mind that Summer grape prefers deep watering rather than light sprinkling.

Why should I put fertilizer on my Summer grape plant?

The growth of plants depletes soil nutrients, especially for fast-growing types. Regular fertilization helps Summer grapes stay healthy and produce more delicious fruit. If plants are not fertilized for a long time, they may face various problems. Nutrient deficiency can lead to foliage issues, such as yellow leaves, reddish color, shape deformities, withered tips, or dieback across the plant. Bark disorders, slow growth, poor shoot development, and a lack of fruit production can also result from nutrient deficiency.

What are the sunlight requirements for Summer grape (Vitis aestivalis)?

Summer grape requires full sun, meaning it should receive above 6 hours of sunlight daily, though it can also thrive in partial sun, with about 3-6 hours of sunlight. It's important to watch the movement of sunlight in your garden to choose spots that offer a balance of light and shade, ensuring the plant's well-being. Originating from habitats rich in sunlight, Summer grape performs best under thorough sun exposure but can tolerate moderate sunlight. However, insufficient or excessive sunlight can lead to poor growth or damage to the plant.

What is the native climate of Summer grape (Vitis aestivalis)?

Summer grape, known botanically as Vitis aestivalis, thrives in warm and temperate regions. It grows well within a temperature range of 50 to 95°F (10 to 35°C). To adapt to seasonal changes, during winter, it's necessary to maintain temperatures between 30 to 55°F (-1 to 13°C). Thanks to its strong cold resistance, special frost protection measures typically aren't needed, although precautions should be taken if temperatures are expected to drop below -25°C.

What should I do if I give Summer grape plants too much or too little water?

If a Summer grape plant is overwatered, its leaves may turn yellow, drop off, and wilt. The plant may also look unhealthy with mushy stems. When these signs appear, it's best to adjust your watering schedule. Wilting can also indicate under watering, with leaves becoming crispy and dry. If the soil is dry and simply watering is not enough, give the plant a full watering. This will help the Summer grape recover, but it may still have dry and yellow leaves for a few days due to damage to the root system. Once the plant returns to normal, the yellowing of leaves will stop. When you have a Summer grape indoors, always check the moisture levels in the pot. Avoid overwatering indoors and look for signs of black spots. If present, allow the soil to dry in the pot by refraining from watering for a few days. Overwatering can lead to root rot, so if you see discolored and slimy roots, consider transferring the plant to a different pot. It's important to prevent root rot by not letting the soil become too soggy. When planting a Summer grape outdoors, dig a little deeper and check the soil's moisture with your fingers. If it feels too dry, it may indicate underwatering, in which case adequate watering is necessary to help the plant recover.

When should I fertilize my grapevines in the summer?

The best time to fertilize is in early spring, specifically before the buds emerge. During this time, Summer grape emerges from winter dormancy and uses the reserves it accumulated over the winter to grow new leaves. To support the development of blooms, a significant amount of energy is required. Therefore, it is recommended to fertilize about 2 to 4 weeks before the expected bloom time. This allows the nutrients to be absorbed and spread throughout the plant. It is possible to continue fertilizing Summer grape during the spring, but avoiding fertilization in autumn is advisable. Fertilizing late in the season can lead to excessive foliage growth, and this can make the leaves vulnerable to damage during the winter.

How can artificial lighting be used for indoor Summer grape plants?

Indoor Summer grape plants require adequate lighting for optimal growth. When natural sunlight is insufficient, artificial lighting serves as an essential alternative. LED lights, capable of providing specific light wavelengths needed by plants, are a popular choice. Full sun plants need 30-50W/sq ft of artificial light, partial sun plants require 20-30W/sq ft, and full shade plants need 10-20W/sq ft. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight, and the duration of exposure should replicate natural daylight hours, typically 8-12 hours per day.

How should Summer grape be cared for during winter?

To prepare Summer grape for winter, it's recommended to water the plant abundantly before the first freeze in autumn, ensuring the soil stays moist and enters a frozen state. This practice helps prevent drought and water scarcity for the plant during winter and early spring. Although the plant has strong cold resistance, if temperatures are expected to drop below -25°C, it's still important to provide cold protection by wrapping the trunk and branches with non-woven fabric or cloth.

How many times should I water my Summer grape?

The Summer grape plant prefers deep and infrequent watering. If it is planted in a pot, be sure to thoroughly soak it with a gallon of water each time. Potted plants have limited water storage, so the soil dries out faster. In colder regions, you should water every 3 to 5 days. Water the plant early in the morning when the soil is dry, whether it is indoors or outdoors. You can check if watering is needed by examining the soil. If the top 2-3 inches of soil are dry, it is time to water the plant fully. On hot days, it may be necessary to check the moisture daily, as the potting soil can dry out quickly. If you have a garden, you will also need to irrigate the soil. In hot climates, watering once a week is sufficient. Only water when you observe that 2 to 3 inches of soil have become too dry, indoors or outdoors. Take into account the amount of rainfall the plant receives and avoid over-watering to prevent root rot. If there is a lot of rainfall, additional watering may not be necessary. Summer grape plants typically grow during spring and fall. When grown outdoors, adding a 3 to 4-inch layer of mulch can help conserve water. Sandy soil drains faster, so plants in this type of soil require more frequent watering. However, with clay soil, you can water less frequently and allow the plant to dry out for 2-3 days to avoid root rot. It may be helpful to mark the calendar whenever you water the plant and pay attention if the leaves start to droop. This could indicate that watering is needed.

When is the best time to not fertilize my Summer grape?

Here are some helpful guidelines for fertilizing Summer grape plants: 1. In the first year of growth, avoid fertilizing Summer grape altogether. Only provide fertilizer if it is absolutely necessary. 2. If you pruned 20% or more of the plant the previous year, do not fertilize. 3. Do not fertilize diseased or damaged plants, as this can do more harm than good. Focus on addressing the root cause of the issue instead of relying on fertilizer as a quick fix. 4. Avoid fertilizing after the peak of summer, as this can lead to excessive growth just before winter. 5. During hot and dry times of the year, it is best to hold off on fertilizing Summer grape. Dry soil does not effectively deliver fertilizer, and fertilizing at this time can stimulate growth that requires more water. 6. It is recommended to fertilize Summer grape earlier in the season when temperatures are cooler. 7. Be cautious about inadvertently giving nearby plants or lawns a double-dose of fertilizer, as Summer grape can absorb fertilizers from its surroundings.

What are the symptoms of insufficient light in Summer grape plants?

Symptoms of insufficient light in Summer grape plants include smaller new leaves, leggy or sparse growth, faster leaf drop, halted or no new growth, lighter-colored new leaves, and chlorosis, where leaves lose their green color and turn yellow. Excessive sunlight can cause sunscald, leaf curling, wilting, and leaf scorching. These signs indicate that the plant is not receiving the optimal amount of sunlight for its health and growth.

What are the signs of temperature stress in Summer grape and how can they be treated?

Temperature stress in Summer grape can manifest in different ways depending on whether it's exposed to low or high temperatures. In cold conditions, if temperatures fall below -25°C, the plant's branches may become brittle and dry in spring, failing to produce new shoots. The solution is to prune away any dead branches in spring. In high temperature conditions, if the temperature exceeds 38°C, the plant's leaves may lighten in color and tips may become dry and withered, increasing susceptibility to sunburn. To remedy this, trim away sunburned and dried parts, and either move the plant to a shaded location or use a shade cloth to protect it from midday and afternoon sun. Ensuring the soil is kept moist with morning and evening watering can also help.

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