How Can I Save My Dying Passionfruit Vine?

Question

Hello! I have two passionfruit vines planted in containers on my deck. They have been growing since mid 2018 and had their first fruit at the beginning of this year. They have been thriving and looking utterly happy and healthy their entire lives, but over the last couple of months, one of the vines has had most of its leaves yellow and die off. I can see a few shoots coming off it attempting to survive but considering it’s neighboring plant is still green and lush I’m concerned that this is certainly not normal behavior! They are in large, well drained containers with a few succulents at the base. Through summer and spring I feed them fortnightly with Thrive all purpose plant food, and in Autumn I fed them with seaweed . I’ve largely avoided feeding them for the last couple of months as I know it can do more harm than good over winter. I really don’t want this vine to die! He’s been my pride and joy since he survived his first few months and I became attached, but I’m wondering if I need to call TOD 🙁

Answer 1

Of the problems described below, Fusarium wilt sounds most like the symptoms you describe. It also could be a case of over or underwatering or improper fertilizing. Also, check the leaves for aphids or other sap sucking insects. See the articles below for more information.

Since you have one healthy vine, I would go ahead and propagate another vine from it, in case the other one succumbs.

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-flower-vine-problems.htm

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/fix-yellowing-passion-vines.htm

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-fruit-vines-in-pots.htm

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-vine-diseases.htm

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/propagating-passion-flower.htm

https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-vine-fertilizer-tips-on-fertilizing-passion-flowers.htm