I am glad that you have vines in addition to the red-flowered vines, because the butterfly caterpillars die on the red-flowered vines. (Bright red such as these. Non-fatal is the cultivar whose flowers are deep red, tending burgundy.)

funny you say that four. there are TONS of butterfly eggs on the purple vines, but none on the red ones! I guess that's a good thing!

If ever you do see eggs or hatchings on the red-flowered vines, then move them to the purple-flowered vines. Hatchlings easy. Loose eggs difficult, because they fall; so, instead you can move the egg-bearing leaves or pieces of leaves. Problem is that they soon dry when detached from the plant. ( I have techniques that are effective in dealing with eggs and egg-bearing leaves. You can ask me, should the situation arise. )

the red vine actually we had to cut back so it could grow on a trellis, so it shouldn't be too much of a problem this year, next year definetly! thanks for the info!

My Passion Fruit Vine is a purple one. It's growing on a trellis in sand, in full sun (southeast exposure) without any fertilizer. It bloomed this spring and the plentiful flowers were beautiful, but well hidden by the foliage. Now it's loaded with large fruit, but has started to drop some before they look ripe. To answer your question, Isaac, I think this vine needs sun rather than fertilizer to bloom. Now to ask one of my own - why is mine dropping its fruit? Can I ripen it in the kitchen?

Mine actually just started blooming so I'm very excited. Usually passion fruit will drop if it gets infrequent watering, if there are pests, or if the weather suddenly changes temperature. They will not ripen off the vine, but depending on the color, their taste will be sweeter if darker. If they're darker and you leave it out for a couple of days, they will be sweeter than if they're consumed right away. Hopefully that helps!

Interesting about the red one. Is that also tru of Pink? I have Lady Margaret that I just bought. I consider it pink but maybe it’s red.

‘lady Margaret’ is a deep pink. And caterpillars love it. Mine gets decimated by Caterpillars almost every summer.

It is good that a lighter colored Lady Margaret is being bred now. For years I have had conspicuous large amounts of the Lady Margaret whose flower color is its characteristic deep red. Purportedly safe.; however, even though entwined with Incarnata, ONLY the Incarnata is EVER laid or eaten.