Help with phal seedlings
 

Hi I purchased some phal hybrid seedlings about 5 cm in leaf span.
The plants were apparently health but often I mark soft dark patches develop on the leaf and it starts spreading and soon the whole plant dies.
I water the plants scantily (once in 7 days or so)

Can someone throw some light on this topic.
Thanking you in advance,

Devapratim from India(conditions here are hot and humid)

Sounds like a mold or fungus issue. In warm, humid conditions, any droplet of water on a leaf can be an incubator for them, especially if there is little air movement around the plants.

You might try making cinnamon "tea" - stir a heaping spoonful of powdered cinnamon into about a liter of boiling water. After it cools to room temperature, filter the sediment out, and the brown liquid is a pretty good fungicide.

Spray the plant and soak the medium and your issues should go away.

To add to what Ray says, since you're climate is hot and humid, it may be a good idea to get some air circulating around the plants, by having a fan nearby for example. That will help keep the rot from reoccuring.

Thanks friends,
I have done pretty much the same,
just scared to spray the under surface of the tiny leaves.
I have a fan and I switch it on after spraying to dry off the remnant liquid.
The plants are all hanging so enough scope for airflow and no scope for water to stagnate.
I will keep you update about the development.

regards,

Dev