Iron Fern

Plant room & care journal · SE Ankeny, Portland, Oregon · since 2016

Slow plants, kept well, in a rainy city

Portland hands you nine gray months and three bright ones, and nearly every houseplant question that reaches our counter turns out to be a question about that. What you’ll find in this journal is whatever has actually worked on our own benches — not what the little tag in the pot claims.

On the bench this month

We repot in earnest from late February on, so the front room right now is a cheerful mess of nursery pots, sifted bark and a lot of spilled pumice. Three of the plants below are out on the bench because you keep asking us the same question about them. The fourth is there because it nearly died on us, and you’ll get more out of hearing how that happened than out of another tidy success story.

  • Golden pothos

    Profile · forgiving

    Start here if nothing you have owned has lasted yet. It will trail four feet down a bookcase in a room you had written off as too dark, and it tells you plainly when it is thirsty.

  • Monstera deliciosa

    Profile · wants a pole

    Nine questions in ten are about leaves that come out whole. It is almost never fertilizer and almost always light, plus something to climb. The profile walks you through it, with a test you can run in your own room.

  • Snake plant

    Profile · drought lover

    The one that dies of kindness. Through a Portland winter you will water ours about every nine or ten weeks, and they look better for it. Your choice of pot matters more here than your choice of plant.

  • Maidenhair fern

    Profile · the hard one

    We lost most of a tray of these in a dry spell two summers ago, and it taught us something about humidity we had been repeating without quite believing. You get the failure along with the fix.

The two guides you’ll want first

A note from the counter

People apologize to us all day long. Someone comes in with a browning calathea in a paper sack and opens with “I know I’ve ruined it.” You almost certainly have not. A plant that has dropped four leaves and held nine is a plant settling into a room, and what helps you now is not guilt but a note of what changed the week before.

If you keep one habit from this whole site, keep that one: write down the date you watered and the date anything went wrong. Six weeks of your own notes will beat any advice handed to you across a counter, ours included.

— Nell Ostrowski, who owns the shop and writes most of this

We went through this page on February 3, 2025.