Incarvillea mairei — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Incarvillea mairei

Incarvillea Mairei

Updated · 25 observations
ON THIS PLANT
A note from PlantMom

Dwarf hardy gloxinia has strong resistance to disease and is usually not prone to illness. That said, it can be affected by pests and diseases present in its environment. Such infections tend to be mild. Its care requirements are moderate. Regular pruning is necessary to keep a neat appearance and support healthy growth. Fertilizing can also encourage more blooms. Dwarf hardy gloxinia is appropriate for anyone with outdoor space, like a garden or patio, and does not demand extensive care experience. It may need more attention when kept indoors.

— PlantMom
CARE GUIDE

How to keep Incarvillea Mairei.

Light

The dwarf hardy gloxinia does best in places where it gets direct, unobstructed sunlight. Native to areas with abundant sun, this plant stays healthiest under those conditions. Plenty of sun encourages strong growth, but receiving either too little or too much can harm its development and shorten its lifespan.

Water

The dwarf hardy gloxinia grows best in well-drained soil and can endure brief periods of dryness. While it prefers consistent moisture, it's crucial to ensure the soil drains well to prevent root rot. To support its growth, it's important to water the plant weekly and consider using mulch. Mulching helps retain moisture and stabilize the soil temperature during the growing season.

Temperature

Dwarf hardy gloxinia does best in temperatures of 32 to 95 °F (0 to 35 °C). Native to regions accustomed to that range, it needs adjustments in care during extreme seasons. If temperatures rise above or fall below those limits, preventative measures should be taken.

Fertilizer

The best time to fertilize a dwarf hardy gloxinia is in early spring, as it comes out of dormancy and begins active growth. Fertilizing supplies essential nutrients for healthy development. Although dwarf hardy gloxinia needs relatively little fertilizer, applying it once a year can boost its survival and encourage better, longer-lasting flowers.

Pruning

The dwarf hardy gloxinia is known for its trumpet-shaped flowers and fern-like leaves. To encourage growth and blooming, prune it from early to late spring, after the risk of frost has passed. Be sure to remove any dead or damaged stems, along with spent flowers, to improve air circulation. Regular pruning not only promotes a compact shape but also encourages vigorous flowering.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Perennial
Genus
Incarvillea
Family
Bignoniaceae
Hardiness Zone
3-9
Mature Height
40 cm
Mature Spread
15 cm
Leaf Color
Green, Dark Green
Leaf Type
Deciduous
Flower Color
Pink, Purple
Flower Size
2.54 cm to 5.08 cm
Bloom Time
Mid spring, Late spring, Early summer
Planting Time
Spring, Summer
Harvest Time
Mid summer, Late summer, Early fall
Native Area
Nepal, Bhutan, China
ALSO KNOWN AS

Other names.

en Hardy Gloxinia
FREQUENTLY ASKED

Reader questions.

How should I water my Dwarf hardy gloxinia plant?

When watering the Dwarf hardy gloxinia, it is best to use filtered water at room temperature. This type of water is preferable because tap water may contain harmful particles. It is important to use room temperature or slightly warm water because the plant is accustomed to a warm environment and cold water can be a shock to its system. Additionally, overhead watering should be avoided as it can cause problems with the foliage. Instead, water the plant by pouring filtered room temperature water onto the soil until it is completely soaked. This method is beneficial for the plant as it helps to moisten the roots and allow them to spread through the soil and gather necessary nutrients.

Why should I give fertilizer to my Dwarf hardy gloxinia plant?

Proper fertilization is essential for the overall health and appearance of the Dwarf hardy gloxinia. The leaves, which form the majority of its structure, benefit greatly from fertilization. It helps maintain consistent color and promotes a healthy texture of the leaves. Moreover, fertilization goes beyond just enhancing the leaves. It also plays a crucial role beneath the soil's surface. By promoting the development of new roots and supporting the stability of existing roots, fertilization enables your Dwarf hardy gloxinia to efficiently absorb nutrients from the soil both now and in the future. In summary, fertilization not only keeps your plant healthy but also enhances its ability to access essential nutrients.

What kind of sunlight does the Dwarf hardy gloxinia plant need?

The dwarf hardy gloxinia is a plant that requires full sun every day. To maintain healthy leaves, roots, and blooms, it needs a minimum of six hours of sunlight. While many perennials also need six hours of sunshine each day, plants like the Orange Daylily or Giant Coreopsis can survive with at least three hours of sun. However, it's important to note that these flowering perennials won't thrive as well as they would in brighter conditions.

What temperature should the Dwarf hardy gloxinia have for it to be best?

The ideal temperature for Dwarf hardy gloxinia depends on the time of year. There are two main seasons to consider: the growing season and the dormancy season. During the growing season, which is when the plant is sprouting, the temperature should be between 65-80℉ (18-27℃). If the temperature drops below 15℉ (-10℃), the plant may suffer and its leaves could turn brown and wilt. However, if it's just a short cold snap, the plant may survive with some assistance. On the other hand, during the warmer months, it's important to protect Dwarf hardy gloxinia from high temperatures. The plant can tolerate temperatures up to 95-105℉ (35-40℃), but anything above that can damage the leaves and blooms. Exposure to hotter temperatures can cause wilting, drooping, and even sunburn, which is difficult for the plant to recover from. Luckily, there are simple and quick ways to address this issue.

If I give my Dwarf hardy gloxinia too much or too little water, what should I do?

Both overwatering and underwatering can harm the health of your Dwarf hardy gloxinia, but overwatering is more common. Too much water can cause the stems and leaves to wilt and turn yellow. It can also lead to diseases like root rot, mold, and mildew, which can be fatal to your plant. Underwatering is less likely, as this plant tolerates dry conditions fairly well. However, if it does happen, the leaves may become brittle and brown. It's important to identify the signs of overwatering early on. Some diseases caused by overwatering, such as root rot, may be irreparable if not addressed promptly. To prevent overwatering, reduce your watering schedule and consider using a loose, well-draining potting mix if the soil retains too much water. If your plant shows signs of underwatering, simply increase the frequency of watering until the symptoms improve.

When should I fertilize my Dwarf hardy gloxinia?

If you choose to grow your Dwarf hardy gloxinia outdoors, it will produce new growth in early spring. This is the signal to start fertilizing the plant for the year. Generally, a single application of fertilizer in spring is enough for the plant to thrive. However, if you want to encourage maximum growth, you can fertilize multiple times during spring and early summer. In this case, you should feed your Dwarf hardy gloxinia approximately once every month to a month and a half.

Can the sun harm Dwarf hardy gloxinia? How can I keep Dwarf hardy gloxinia safe from the sun and heat?

In warm climates, some Perennial Flowering Plants may struggle with excessive heat and suffer from sun damage. They can wilt, dry out, or even experience growth problems if they are consistently exposed to the intense afternoon sun. However, not all plants require protection from the light afternoon sun. For those that are harmed by intense afternoon exposure, it is recommended to provide them with some shade in warmer climates. Gardeners can achieve this by planting these plants in areas that do not receive direct heat during the afternoon, such as under trees or behind bushes.

What temperature does a new Dwarf hardy gloxinia seedling need?

If you're growing a Dwarf hardy gloxinia outside for the first time, it may need extra care during the coldest months. Frost can cause severe damage and prevent it from growing back healthy in spring. To protect the plant, keep it at a temperature of at least 40℉(5℃) until it becomes established. You can achieve this by bringing it indoors for a month or two or by using mulch or fabric barriers to shield it from frost. In the first year or two, it's best to plant the gloxinia in a shadier spot as smaller, weaker plants struggle to regulate their temperature in hot weather. Limit direct sunlight exposure to no more than five hours per day, especially if the temperature exceeds 80℉(27℃). To deal with summer heat, use shadecloth and water or mist the plant regularly.

How often do I need to water my Dwarf hardy gloxinia plant?

If your Dwarf hardy gloxinia is in a pot, the best way to determine if it needs water is to check the moisture level in the soil. If the top two to three inches of soil are dry, then it's time to water it. For Dwarf hardy gloxinias grown outdoors in the ground, you can use a similar method to check the soil moisture. Once again, if the top few inches of soil have dried out, it's a sign that it needs watering. During spring and early fall, you would typically water this plant once a week using this method. However, in extremely hot weather, you may need to water it twice a week or even more. It's worth mentioning that mature, well-established Dwarf hardy gloxinias have a remarkable ability to withstand drought.

When is it not a good idea to fertilize my Dwarf hardy gloxinia?

During late fall and winter, your Dwarf hardy gloxinia goes into a dormant phase where it doesn't produce new growth. During this time, it's best to avoid fertilizing it. In spring and summer, if you choose to fertilize, gradually reduce the amount as summer approaches since the growth rate also slows down. It's never a good idea to fertilize the plant during extremely hot weather or when the soil is very dry as this can stress the plant and cause it to die prematurely.

Should I keep Dwarf hardy gloxinia out of direct sunlight?

Certain perennial plants require ample sunlight to reach their maximum bloom. However, in warmer climates, some of these plants actually benefit from less sun. For instance, individuals residing in hotter regions might find it beneficial to shade their flowering perennials during the intense afternoon sun, especially during summer months. Although many perennial flowering plants prefer partial shade in the hottest climates, there are exceptions. Take the Giant Coreopsis, for example, as it is not bothered by excessive sun exposure. These plants can flourish even when placed in the full sun during scorching weather.

How can I keep Dwarf hardy gloxinia safe in very hot or very cold weather?

Here are some tips to protect Dwarf hardy gloxinia from cold damage during the growing season. - If temperatures drop below 15℉(-10℃), consider bringing container-grown Dwarf hardy gloxinia indoors, where it can be exposed to bright, indirect light until temperatures rise again. - For ground-planted Dwarf hardy gloxinia, you can use mulch or horticultural fabric to create a protective barrier against frost and cold wind. - To prevent damage from hot temperatures above 80℉(27℃) in the shade, limit the plant's sun exposure to six hours or less per day, preferably in the morning. Installing shade cloth or a fine plastic mesh can reduce direct sunlight during the hottest parts of the day. - Additionally, consider setting up a misting system to release a cooling mist around the plant's base, which helps lower ground temperatures throughout the day.

PLATES
Incarvillea mairei leaf
PLATE 01 · leaf
Incarvillea mairei leaf
PLATE 02 · leaf
Incarvillea mairei flower
PLATE 03 · flower
Incarvillea mairei flower
PLATE 04 · flower
Incarvillea mairei other
PLATE 05 · other
Incarvillea mairei other
PLATE 06 · other
ALSO IN THE LIBRARY

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