Problem with Evening primrose

[khabbab]

This evening primrose (Oenothera Pallida) is growing in soil bed with morning sun only 8am - 11 am. Can some one tell me what is wrong with it? The main stem got some black soot apparently. Other plants in same soil bed are doing fine.

Same plant in pots (semi shade) are on flowers.

[M Farooq]

This evening primrose (Oenothera Pallida) is growing in soil bed with morning sun only 8am - 11 am. Can some one tell me what is wrong with it? The main stem got some black soot apparently. Other plants in same soil bed are doing fine.

Same plant in pots (semi shade) are on flowers.

It may be an obvious comment, but it seems that your primrose does not like the clayey soil and this heat combination. Even the other (red) flower plant seems to be wilting (although perfectly green). Is the soil in the pot different by chance?

[Farhan Ahmed]

have you recently removed some plants in the vicinity of this plant?

[Hamad Ahmed Kisana]

it is due to Stem and Root Rot..which is result of rains and clay soil.

[khabbab]

This evening primrose (Oenothera Pallida) is growing in soil bed with morning sun only 8am - 11 am. Can some one tell me what is wrong with it? The main stem got some black soot apparently. Other plants in same soil bed are doing fine.

Same plant in pots (semi shade) are on flowers.

It may be an obvious comment, but it seems that your primrose does not like the clayey soil and this heat combination. Even the other (red) flower plant seems to be wilting (although perfectly green). Is the soil in the pot different by chance?

Yes the soil in pot is different and is amended with leaf compost. But the ones in pots are also not looking happy. Although flowering, they are in not in best of the shape. I will post pics tomorrow.

[khabbab]

have you recently removed some plants in the vicinity of this plant?

Nopes. It is already heavily crowded bed and plant spacings are less than usual.

[khabbab]

it is due to Stem and Root Rot..which is result of rains and clay soil.

100% correct. But the culprit can be fungi, No? Drainage is good in this bed, It is 2 feet raised bed, not sure why this happened.