How to treat Madagascar Jasmine leaves going white?

[Nabila]

Hi,

My Madagascar Jasmine suddenly got something like a whitish thing (picture attached). First I thought they are sunburn.

 

But this morning I noticed they are not and it's spreading in all leaves. Not sure how to stop it. I just sprayed Neem oil. But same, it's spreading fast and the whitish portion is also getting bigger in size. Please help with your expertise. Thanks.

 

 

[Jason]

Hi @Nabila,

Let me tag one of our most experienced members in @Noelle to see if she can share her thoughts on your plant. 

Jason

[Noelle]

Hi @Nabila 

The markings on your leaves look remarkably like sun burn - where intense rays of the sun have been focused on the leaves either from a reflected glare or through moisture. They don't appear to be disease or pest related or caused by fertiliser or lack of it, as only those two leaves are affected. Perhaps turning the pot or relocating slightly may prevent further damage.

[Nabila]

Hi Noelle,

Thanks for your help.

It's on more leaves from this morning. Kind of like all over and spreading. If I touch, does not feel like sunburn. This plant is staying in the same position for past 1 year and it never happened. May I ask the schedule for a gardener in Sydney Gladesville Bunnings section please? I think I need to go with a physical sample of the leaves. It's spreading fast. I will upload new pictures tonight.

Nabila

[Nabila]

Thank you Jason

[EricL]

Hello @Nabila 

Drying leaves on a Madagascar Jasmine (Stephanotis floribunda) can result from several environmental or care-related factors. One common issue is improper watering. Underwatering can cause leaves to dry out, especially in hot or dry conditions, while overwatering can lead to root rot, preventing the plant from absorbing nutrients properly. It’s important to keep the soil moist but not soggy, watering deeply and ensuring the pot has good drainage. 

Another possible cause is low humidity, as Madagascar Jasmine thrives in humid conditions. Dry air can lead to leaf dehydration, so increasing humidity by misting, using a humidifier, or placing a tray of water nearby can help.

Temperature stress is another factor to consider, as these plants prefer stable, warm conditions between 15–26°C. Exposure to cold drafts, sudden temperature changes, or heat from air conditioning or heaters can cause stress, leading to drying leaves. Additionally, insufficient nutrients may play a role. A lack of essential elements like nitrogen or potassium can weaken the plant, so feeding it with a balanced liquid fertilizer during the growing season is recommended.

Light conditions are equally important; while Madagascar Jasmine thrives in bright, indirect light, too much direct sun can scorch the leaves, and insufficient light can weaken the plant. If the plant is root-bound or growing in compacted soil, its ability to absorb water and nutrients may be compromised. Repotting it into fresh, well-draining soil can address this. 

Lastly, consider that it is natural for older leaves to dry and fall off as part of the plant’s growth cycle. Regularly removing dried leaves can promote healthier new growth. Observing the plant’s environment and adjusting care accordingly can often resolve the issue. 

I'll give Sydney Gladesville Bunnings a call tomorrow to find out when the gardening specialist will come in. 

If you have any other questions we can help with, please let us know.

Eric