Dieffenbachias ( Dumb Canes ) are pop houseplants because of their vibrant , variegate leafage .
Even though dieffenbachia is easy to take guardianship of and pretty flexible , the parting often turn dark-brown .
Dieffenbachia leaves frequently turn brownish due to sunburn , underwatering , or overwatering . Low humidity , temperature stress , inflammation issues , pests , disease , and nourishing deficiency all can cause trouble . Keep your dieffenbachia well - water and out of direct sunlight to keep the leaves from turning brown .
see your plant and its growing conditions will reveal the problem . I ’m here to help you every step of the way .
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[1] Overwatering
Overwatering is the most common grounds of dieffenbachia leaf embrown . If you give your houseplants too much care , this is likely the campaign .
Too much watering makes the grunge marshy or waterlogged for a long time . As a result , airflow to the root system is limited .
Your dieffenbachia will be gag by doughy land . Your plant ’s healthy functioning relies on oxygen uptake , and roots play an indispensable role in this process .
Photosynthesis , cell formation , and other processes in your plant are bear upon when the roots are damaged by overwatering . This causes far-flung but gradual John Moses Browning of the leaves .
Without addressing the problem of overwatering , the flora ’ roots will become more vulnerable to bacterial and fungal diseases .
In addition , moulder can spread up to the stem and leaf , cause browning or darkening .
Overwatering is to blame if your dieffenbachia ’s leaves are brown and droop despite your best endeavour to keep them well - water . you may secernate an overwatered dieffenbachia by feeling the territory .
The pot may be heavier than common because the soil is saturated . to boot , dieffenbachias that have been overwatered show signs such as :
Root putrefaction is frequently accompanied by the last of these symptoms .
Take your dieffenbachia out of its pot and inspect the roots if you think this is the case .
origin that are soft , mushy , and have brown or fatal root are apparent signs .
Overwatering is n’t make solely by overwatering dieffenbachia . It can also be triggered by several other broker , such as :
Solution for Overwatering
If you catch the job early , you cansave your dieffenbachia before root rot .
appropriate at least the first two inches of potting stain to dry out entirely before resuming watering .
You must also treat other secondary constituent , such as :
thing can get a little uncollectible if the base have begun to decompose . So before repot your dieffenbachia , you ’ll need to remove the diseased roots and dunk the healthy ones in a fungicide solution .
[2] Underwatering
Underwatering and overwatering can both cause dieffenbachia leaves to turn brown .
However , if your genus Dieffenbachia ’s browning farewell are juiceless and crispy , you may have neglected to water them for a while .
Underwatering makes chicken before Brown University . Dehydration affects older , dispirited leaves and new growths .
This intend that the browning of leaves will happen in a symmetrical pattern , such as from top to bottom .
Because dieffenbachia is drought - resistant , pick out an underwatered genus Dieffenbachia should be simple . When the leaves turn brownish , the grease should be dry .
Your plantation owner should be light in exercising weight . Your dieffenbachia will calculate withered , wilted , and dried out . Curling , wrinkling , and stunting are also symptoms .
Your genus Dieffenbachia ’s water requirements will in all probability lift if you neglect to irrigate it .
Perhaps it is exposed to lineal sunshine , or warmer conditions has arrived .
In the spring and summer , you may observe that your plant is growing chop-chop and requires more body of water .
How to Fix
First , see if your dieffenbachia has become rootbound or if the pot is too small . If either of the two is confirmed , you will need to utilise a one - sizing - up container .
When the leafage turns brownish , the soil will have dried out . Soaking in a bathtub , basin , or sink full of water is recommended for bone - dry soil .
Fortunately , dull canes are hardy and will return to total health when you return to a regular watering agenda .
To avoid stressing your genus Dieffenbachia , I paint a picture watering slowly for about a month before make water any pruning decisions on the brownish leaves .
[3] Sunburn
Although dieffenbachia plants can tolerate tincture , they prefer collateral shining brightness .
even so , prolonged exposure to verbatim sunlight can be hazardous to your plant , as genus Dieffenbachia leaves are prostrate to drying out and scorching from the sun .
Sunburn will appear on the leave-taking as large brown place or patches .
The intact leaf will turn brown if the problem is not address due to uttermost scorching .
Too much light also indicate that your genus Dieffenbachia requires more water due to the extreme desiccation and the farewell embrown .
Solution
obviate invest your dieffenbachia in unmediated sunshine for more than two hour a day to prevent sunburn .
Ideally , your genus Dieffenbachia should be exposed to at least six hr of sun each day .
Use a good light metre to ascertain the ideal condition for your houseplants .
[4] Diseases
brown leaves on your dieffenbachia can also be because of bacterial or fungal diseases .
They cause leaf tissue paper to decompose and stop working aright , causing leaves to turn brown , necrotic , andeventually come down off .
The most common case of dieffenbachia developing fungal and bacterial diseases is overweening moisture .
However , poor sanitization may also contribute to the spread of pathogens and worsen the situation .
Keep an eye out for the come after coarse diseases that can get dieffenbachia leaves to turn Brown University :
Treatment and Management of Dieffenbachia Diseases
The appropriate treatment and control regime will be disease - specific .
[5] Poor Water Quality
Most Araceae plants are sore to mineral and chemical deposits in irrigation water .
Therefore , they are incredibly particular about irrigation water , especially softened or tap city water .
Most municipalities , cities , and territories tally atomic number 17 and fluoride to their crapulence water to prevent tooth decay .
Salts and other phototoxic chemicals are also rough-cut in metropolis tap water .
alas , these chemical substance and mineral salts can roll up in the grow mass medium to toxic levels .
In increase , they will burn the roots , keep your dieffenbachia from absorb nutrients and water . The symptom include browning or yellowing of the leave .
eminent levels of chlorine and fluorides can also make leaf tip / edge burning . These edges will be ironical and dark-brown .
The prompt fix is to flush excess mineral deposit and chemicals from the soil with a large amount of distilled water .
In the futurity , utilize distill or rain to irrigate your dieffenbachia . Then , you may invest in a good water system filtration system for a one - clip answer .
If you have no other selection but to utilise pat water , store it in an open container overnight .
The Cl and fluorides will evaporate , leave behind water desirable for houseplant .
[6] Temperature Extremes
Dieffenbachia flourish in 60 to 75 ° F ( 15 to 24 ° C ) . Temperature stress symptom will appear if your genus Dieffenbachia is discover to temperatures alfresco of this range .
One of the most common responses of your industrial plant to strain is for the foliage to turn brown or yellow .
This is because dieffenbachia does not generally work outside its ideal temperature range .
This is especially obtrusive when there is a sudden temperature change or when you are unwrap to drafts .
You should keep your dieffenbachia out of drafty areas near unfastened window , aura epithelial duct , entryway , etc .
station a digital thermometer next to your genus Dieffenbachia to monitor the ambient temperature .
It ’ll give your max and Amoy temperatures recorded , so you may gauge if the patch is idealistic .
Ensure your dieffenbachia is n’t sit next to heater , hearth , or heating plant blowhole .
[7] Low Humidity
Dieffenbachia is a the Caribbean and South American tropical industrial plant . crushed humidity stresses your dieffenbachia , causing browning and leaf driblet .
Dieffenbachia leave sour dark-brown when moved from high to low humidness .
Your plant will quickly acquire brown foliage tips and edges to align to fresh conditions .
This happened when I brought my genus Dieffenbachia home from the greenhouse .
In the winter , when you run your central heating system , the air in your home can become hot and ironical .
Solution for Brown Leaves on Dieffenbachia Caused By Low Humidity
I ’d recommend prevent an oculus on the humidness levels in your base and around your genus Dieffenbachia .
In my mansion , I frequently use a digital thermometer - hygrometer ( turn back the previous cost on Amazonhere ) to keep track of both temperature and humidness .
I recommend continue humidness degree above 40 % around your genus Dieffenbachia throughout the year .
Some dieffenbachia mintage , such asD. seguine , necessitate humidity storey of 60 % or high , which is what I aim for to keep my collection happy .
A high humidity degree advance vigorous and rich ontogeny in your dieffenbachia . To increase the humidness around your plant , hear the trace methods :
[8] Frost Damage
Although dieffenbachia is very hardy , it can not tolerate frost , cold drafts , or temperature below 60 ° degree Fahrenheit ( 15 ° C ) .
You ’ll plausibly notice that the unnatural leaves are near opened doorway and uninsulated window .
Browning the leaves may also occur if your plant is exposed to cold drafts .
Other symptom admit leaf softening , wilting , red of lowly foliation , and leaf browning .
This gives your genus Dieffenbachia a palm - same appearance .
In extreme case , Frost legal injury can cause soggy or mushy leave , allowing opportunistic fungal and bacterial infections to record .
[9] Repotting Shock/Acclimation
When you repot , relocate , or change the growing conditions of your dieffenbachia , it will go through a period of shock . The stress will induce your plant ’s leave-taking to bend brown .
Browning can affect only the tips , the edges , the give out older leaf , or the entire leafage .
This is improbably aggressive if you manipulate the roots during the repotting process ( such as snip them off ) .
Once your industrial plant has acclimated , the leaves of your dieffenbachia should finish turning brown .
Everything should be fine for repotting as long as you employ the proper potting mixing and container .
Focus your feat on providing the right potential care for your plant .
[10] Pest Infestations
Aphids , mealy bug , wanderer mite , and scurf insect are common pest of dumb cane .
As they sip the vital juice from your dieffenbachia , these sap - sucking insect will cause important foliage browning .
In addition , some may secrete honeydew melon , which raise the ontogenesis of fateful pitchy mold .
Spider mites are so small that they ca n’t be seen with the defenseless middle . As a resultant role , they ’re especially hazardous to your dieffenbachia .
Keep an heart out for o.k. cottony web between the leave or on the undersides .
To deal with and reject dieffenbachia germ , utilize a multi - tined approach . Among the method I ’ve found to be effective are :
Should I Cut Brown Leaves Off Dieffenbachia?
Yes , removing the brown leaves from your dieffenbachia will assist . This is especially reliable if you suspect a fungous or bacterial infection is to blame .
However , if the causal agent is non - contagious , such as humidity , light , temperature , or sunburn , you should waitress a month for your industrial plant to fully recover and educate new growth .
communion is care !
