Begonia maculata 'Wightii'
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Provide bright, indirect light throughout the year to entice good quality growth. A sunny position that's too sharp will cause sun-scorch, along with crippling foliage and stunted growth. Locations that are too dark will cause the variegations to fade, as well as an increased chance of mould developing on the soil and root rot. The amount of light and current season of the year will directly govern the frequencies of waters per month. Specimens placed in darker areas must be kept on the drier side to life, whereas brighter locations will require more soil moisture to lubricate photosynthesis.
Allow the top third of the soil to dry in between waters, or a few inches for specimens that are too large to lift. Never allow standing water to accumulate beneath its pot as root rot is a common issue among gardeners. Under-watering symptoms include stunted growth, crispy brown patches forming on the leaves, yellow older leaves and wilting. Due to the Begonia's need for regular moisture, dehydration is a common problem that can be sped up by too much light or heat. Over-watering symptoms include mouldy soil, yellowing lower leaves, leaf blotches in brown, yellow or black, wilting and rotted stems/roots. Although it's under-watering that you'll need to manage, locations that are too dark may also cause soil-borne diseases such as root rot if it's kept too moist. Click here to learn more about identifying and addressing root rot.
Average room humidity is more than enough to satisfy this plant. Never situate it within a few metres of an operating radiator due to the enriched chance of browning leaf-tips.
For those who tend to under-water, create a humidity tray to provide a moist environment and prolong the rate of drying-soil. Hose the foliage down from time to time to hydrate the leaves and keep the dust levels down.
Feed fortnightly in the growing periods and monthly for the rest of the year, using a houseplant-labelled fertiliser. Never over-fertilise the plant as a build-up of salts and chemicals can burn the roots, causing stunted growth and yellow leaves over time.
While the specimen is budding or in bloom, switch to a product high in potassium to prolong the duration of flowers. Good examples of this are a Poinsettia or Tomato-labelled Feed. Revert to the original fertiliser once the final inflorescence elapses.
Older leaves that rapidly become yellow are a clear sign of over-watering, usually caused by too little light, with other symptoms include mouldy or heavy soil, stunted growth and a rotten base. Although Begonia can do well in darker locations, the frequency of irrigations must be reduced to counteract the chance of root rot. People don't realise that a plant's root system needs access to oxygen too; when soil is watered, the air will travel upwards and out of the potting mix. A lack of accessible oxygen will cause them to subsequently breakdown over the oncoming days. Click on this link to learn more about root rot and how to address it.
Persistent droughts will result in crispy brown sections across its foliage. Allow the affected leaf to thoroughly brown over before removing it with a clean pair of scissors, as puncturing the soft tissue may cause bacterial diseases further down the line. Introduce a watering schedule or pebble tray to avoid the risk of dehydration in the future.
Severe dry air may cause browning leaf tips with yellow halos. Although this won't kill the plant, increase humidity to prevent new growth in adopting these symptoms. Either mist weekly while the heaters are on, or create a humidity tray to present a better growing condition.
Clean the leaves regularly. Although this isn't too much of an issue, a build-up of dust particles can clog up the plant's pores, causing lowered light capturing-efficiency. Rinse the topsides of the leaves down once a month to keep levels down and improve growing conditions.
Spider Mite are small, near-transparent critters, that'll slowly extract the chlorophyll from of its leaves. Have a check under the foliage, most notably along the midrib, for small webs and gritty yellow bumps. Click here to read our article about the eradicating Spider Mite, along with some extra tips that you may not find elsewhere!
The browning of the sheath's casing shouldn't of be a concern, as it's a wholly natural process which affects all specimens across the world. Remove the brown section once it becomes dry and crispy, using your hands to peel back the browned tissue and improve its overall appearance.
A lack of flowers is caused by an insufficient dormancy period, where the temperatures are kept more or less the same over the year. Reduce the warmth by a couple of degrees over the autumn and winter months, along with fewer irrigations to ensure a well-spent dormancy. Supplement in the weeks leading up to potential buds (early summer) with a potassium-based fertiliser, for instance, tomato food.
The name, Begonia, was penned by Charles Plumier who was a French botanist in the seventeenth century. Carl Linnaeus adopted this name in 1753, honouring a well-respected governor of Haiti, named Michel Bégon. The genus has almost two thousand accepted species that have natural distributions across five continents, except Europe and Antarctica. The species, B. maculata, was described by Giuseppe Raddi in 1820, using the Latin word, macula, that refers to its spotted or speckled foliage.
12° - 26°C (54° - 80°F)
H1b (Hardiness Zone 12) - can be grown outdoors during the summer in a sheltered location with temperatures above 10℃ (50℉), but is fine to remain indoors, too. If you decide to bring this houseplant outdoors, don't allow it to endure more than an hour of direct sunlight a day as it may result in sun-scorch. Regularly keep an eye out for pests, especially when re-introducing it back indoors.
Up to 1m in height and 50cm in width, when maturity is reached in around four years. Similar to most cane-stemmed Begonia, B. maculata is considered a rapid-growing species that can grow up to 30cm per season.
Remove yellow or dying leaves, and plant debris to encourage better-growing conditions. While pruning, always use clean utensils or shears to reduce the chance of bacterial and fungal diseases. Never cut through yellowed tissue as this may cause further damage in the likes of diseases or bacterial infections. Remember to make clean incisions as too-damaged wounds may shock the plant, causing weakened growth and a decline in health.
Remove browned sheathes once they become dry and crispy, using your hands to peel it back for the improved appearance.
Via Seed or Stem Cuttings.
Stem Cuttings via Water - (Easy)
This species will bloom from mid-summer until early autumn, producing clusters of white flowers that can last up to six weeks. Although minimal work needs to be done for enticing a bloom, swap your fortnightly supplements for a potassium-based fertiliser in the summer months. Maintain fortnightly feeds until the final flower elapses in the autumn.
Repot every three years in spring using a houseplant-labelled compost and the next sized pot with adequate drainage. Hydrate the plant 24hrs before the tinkering with the roots to prevent the risk of transplant shock. For those that are situated in a darker location, add a thin layer of small grit in the pot's base to improve drainage and downplay over-watering. Click here for a detailed step-by-step guide on transplantation, or via this link to learn about repotting with root rot.
Keep an eye out for mealybugs, aphids, spider mite, scale, thrips, blackfly & vine weevils that'll locate themselves in the cubbyholes and undersides of the leaves, with the exception of the latter in soil. Common diseases associated with Begonia are root rot, anthracnose, cercospora, leaf-spot disease, botrytis (grey mould), rust, powdery mildew & southern blight - click here to learn more about these issues.
This plant is classified as poisonous, so if small sections are eaten, vomiting, nausea and a loss of appetite may occur. Consumption of large quantities must be dealt with quickly; acquire medical assistance for further information.
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