It often surprises people that even though carnivorous plants prey on insects they too can suffer at the feet and mouths (sometimes beaks) of leaf sucking, munching and thieving little monsters and indeed diseases and ailments, here we will outline in a more digestable manner what particular species suffer from more commonly, starting out simple this will no doubt become more comprehensive as I work on it. See Managing Pests and Diseases for potential solutions and actions.

Sarracenia - These can suffer from greenfly, scale insect, mealy bug, sometimes certain mites, Thrips, catarpillars, slugs and the dreaded vine weavil. In addition to these rodents can cause some real devastation as they shred and bend pitchers to the rotting contents but oddly rarely for plants grown outside, birds are the No.1 pest outdoors as they root around for nesting material and insects, I saw a blackbird one time sat on a neighbours chimney with a whole pitcher plant in its beak, I was not as impressed as the proud bird was that day.

When it comes to diseases and ailments this can be quite an issue under glass especially in humid conditions be it cool or warm, Botrytis and Pythium cause the biggest issues when it arises but although mostly common in Sarracenia good conditions should rarely see cases of those, Botrytis can become a problem if there is underlying damage with overly wet poorly ventilated conditions probably more likely as things warm up but not enough for growhouses to be opening up allowing good airflow, ventilation is probably one of the most important factors growing plants under cover next to considerations of watering, Pythium although far less common can be a real issue if you are unlucky enough to get it, follow links to the Managing Pests and Diseases and how it can potentially be dealt with and the actions required.

Dionaea - Yes our beloved fly traps can suffer from greenfly commonly and often from the two spot spider mite but not a lot else it seems, small slugs are often caught, Mites are hard to control and for a larger collections a dedicated miticide (Killermite for example) is effective, other eco friendly methods can work but require a lot more effort to actually eradicate them but that said although badly effected fly traps look unsightly and lose traps quicker I have never seen one die from it although it is bad practice to let it get out of hand or even pass plants on to others collections, a population boom tends to happen in the warmest part of summer when they get super active, in winter they are not so evident when they slow right down, I will outline this more in treatments and cures as I gained a lot of experience with mites in the past. See Managing Pests and Diseases.

Drosera - Aphid (greenfly/ blackfly) seem to be the most common pest.

When it comes to obvious diseases I can’t say I recall any apart from maybe Botrytis in the past.

Darlingtonia - I mostly grow these outdoors and I rarely see any damage from anything, I often ponder if they give off some sort of repellant, in their natural habitat I’m sure I read that deer like to graze them though.

When it comes to diseases etc. I’ve not often seen anything conclusive apart from stems rotting where they small amount of prey is at the bottom of pitchers, heat seems to be the enemy of Darlingtonia roots.

Pinguicula - only really seem to get chomped on by slugs from my experience.

When it comes to other ailments I can only touch on '“brown heart rot” I’m not sure if this is a disease or an environmental issue if I’m being honest, I do know that they hate too much moisture in the crown, a more open media and ventilation helps greatly with this, some types appear to be more prone than others.

Nepenthes - I’ve heard that mites can populate these plants, I’m not aware yet of much else but I could easily imagine scale insect would populate them if given the chance.

Disease wise I can’t yet say as I’m still venturing into these amazing plants.