Passiflora lindeniana is a tree that grows in the cooler mountain regions of Venezuela. It is relatively easy to grow from seed but once it gets to a foot or so tall & at any time thereafter it has a tendency to stop growing & drop all its leaves. It is under severe threat in the wild but we are not really near knowing what will keep it happy to the extent that it will flower in captivity.
The young plant above is a little poorly after arriving through the post but the green tip is a good sign. It is in a potting mix of a third each of peat, pumice, and bark.
Peter Jensen of New Zealand comments:-
''I have grown Passiflora lindeniana for 10 years, and thought you might be interested in my experiences with its culture. I have always grown this plant very wet, flooding every day during summer, and backing off in winter. I have found seed relatively easy to germinate, but young plants are very slow growing. I have had good success with semi hardwood cuttings, using indole butyric acid as a rooting stimulant, bottom heat around 20 deg. C and mist. I use washed fine river sand as a rooting medium. It does not seem to be important when cuttings are taken. Rooted cuttings grow well in a pine bark based mix with high lime content, and slow release fertiliser. My plants also react well to frequent light applications of urea (46% N). Leaf drop seems to occur if humidity gets too low, or if the plants come under water stress during hot weather, which I understand is a common rainforest tree behaviour in the wild.''
Paulo Miranda of the Azores, who kindly supplied me with the above seedlings, comments:-
''They must have some calcium. The soil must have very good drainage & must be always wet or moist, and they need partial shade. P. lindeniana doesn't like very much direct sunlight, and hot temperatures, because it's a plant from the high mountains of Venezuela. The soil where I have my P. lindeniana seedlings is a mix of manure, peat, and pine bark. The roots of P. lindeniana are prone to be attacked by fungus.''
Rosemary Steele of Nestlebrae Exotics NZ comments,
''Both our plants are planted in our growing house which is a huge (40x50m) shadehouse with hail cloth roof and various grades of shadecloth on the walls. It is almost 6m high and when we get around to it we put up an extra layer of frost cloth in the winter. The plants are now about 2-3m high, one is multistemmed and has a diam of about 5cm just below the trunk division. The other is slightly thinner. They are in partial shade from the other plants around them and at least one has suffered damage from banana stems falling on it. Neither has flowered yet.
Our soil is free-draining sandy loam and
they are fertilised with whatever we are giving everything else, usually
slow release stuff like Osmacote but a cheaper form of it. They are
martyrs to thrips and look horrible at the moment for that reason - we
don't spray against them; too hard to do when stuff is so big and there is
so much if it!