What's happened to these?

[Wile E. Peyote]

What might be responsible for this damage, and how can I avoid it in the future?

[TheMooseZeus]

Im no expert at all but fast growth or swelling due to too much water? It still looks super healthy

[zelly]

tip damage appears to be snail slug or caterpillar

[Wile E. Peyote]

Cheers guys, I had suspected it was a little critter. Just haven't caught any in the act...

[DualWieldRake]

This is damage related to temperature fluctuations or UV

 

It's obvious from the symmetrical notch

[Wile E. Peyote]

Hmm, the damage did coincide with the spring warmth. Although I haven't had this issue in the past, even with more extreme weather changes.

[DualWieldRake]

It may wants to pick up growth like TheMooseZeus mentioned, not having put up defences for harsh situations (i'd expect sunlight or uv seeing your temps)

 

 

In this case it should "grow out of it" soon enough i guess

Edited November 7, 2018 by DualWieldRake

[Wile E. Peyote]

Yeah they look healthy AF so I'm not so concerned. Grunge is cooler than textbook perfection anyway. Scars for character!

[Flux]

I noticed the same thing a few days ago and thought it was slugs...but being that one has this same v -formation and is only on the new growth tips...the too fast thing might be the issue