Moving houseplants in Portland: what rides with you and what a crew can take

Why plants usually travel with you

The what movers won't move guide puts living things in the same category as perishables: items a mover generally declines, because the truck is not built for them and the outcome cannot be promised. A moving truck is a metal box. In July it is an oven; in January it is a refrigerator. A plant sealed in a carton in that box for a morning, then jostled through an unload, is being asked to survive conditions no one would choose for it.

There is a practical reason too. Wet soil in a cardboard box turns the box to pulp, and a tipped pot in a load spreads dirt across everything below it. Crews would rather the plants ride elsewhere, and they will say so when asked.

So ask. Some movers will take plants on a short local move if they are packed and the owner accepts the risk; many will not. Either way, the plan that works is the one where the plants go in your own car, at your own pace, with the windows and the heater under your control. That is the plan the rest of this guide assumes.

Two weeks out: prune, repot, and check for pests

Plants travel better when they are compact and healthy, and two weeks is about the minimum for them to recover from the preparation before the stress of the move itself.

Prune first. Trim leggy growth and dead leaves so each plant takes less space and loses less water in transit. Then inspect every plant closely for pests, on the undersides of leaves and at the soil line. Moving is how an infestation spreads from one plant to the whole collection, because they all spend a day packed together, and a new house is a bad place to discover it. Treat anything you find now, and isolate it from the rest until you are sure.

Repotting is a judgment call. A plant in a heavy ceramic or terracotta pot travels better in a plastic nursery pot, with the ceramic wrapped and packed as the fragile item it is. A plant that has been in the same pot for years may be root-bound and worth potting up anyway, but do it now, not the week of the move, because a freshly repotted plant is a stressed plant. OSU Extension's gardening resources are the local reference for care questions by species.

Water on a normal schedule until two or three days before the move, then stop. Soil that is damp but not wet is the target: enough that the plant is not dry, not so much that the pot is heavy and the box goes soft.

The Portland weather window

Portland's houseplant risk runs two ways. From late fall through early spring, the danger is cold. Most houseplants are tropical, and a few minutes on a porch in a freeze, or an hour in an unheated car, can do damage that shows up a week later as blackened leaves. The winter moving guide covers the freeze events; for plants, the rule is that they go from a warm house into a warmed car and back into a warm house, with the shortest possible time in between.

In summer, the danger is the closed car. A parked car in August heats fast, and a plant left in it while the crew unloads for three hours is cooked. Keep the car in shade, crack the windows, or better, unload the plants first into a room at the new house that is out of the sun.

The wet months bring their own problem: rain on the walk from the door to the car soaks the box, and a soaked box is a collapsed box. Keep plants under cover until the car is at the curb. The National Weather Service Portland forecast is the place to check the morning of.

The best window, unsurprisingly, is the mild middle of the year. But moves happen when they happen, and every season is workable if the plants spend the day in the car rather than on the porch.

Packing plants for the car

Use open boxes, not sealed ones. Group pots of similar height in a sturdy box, and pad between them with crumpled paper or towels so nothing tips. Tall plants can have their foliage loosely gathered upward and wrapped in paper or a light sheet to protect stems and keep leaves from snapping in a doorway. Cover the soil surface of each pot with paper or a plastic bag tied around the base of the stem, so a bump does not send dirt across the back seat.

Hanging plants come down and travel in boxes like everything else. Very large floor plants may need to ride in the front seat with the belt across the pot, or lying on their side in the back with the pot bagged and braced, for a short drive only.

Load plants into the car last, after everything else, and unload them first at the new address into a spot that is out of direct sun and out of the crew's path. Then leave them alone. Plants that have been moved drop leaves and sulk for a week or two, and the instinct to water and fertilize them back to health usually makes it worse. Water when the soil is dry, put them near the light they had before, and wait.

Plants are one more thing on the move-day list along with the pets and the first-night box, all of which travel with the family. If there are a lot of them, it is worth a separate car trip the day before rather than trying to fit them around the essentials.

Leaving the state with plants

A local move raises no regulatory question about plants. A move across a state line can. States regulate the movement of plants and soil to control pests, and some inspect vehicles at the border; California is the well-known example, with agricultural inspection stations on its highways. Rules vary by destination and by plant, and they change.

The Oregon Department of Agriculture is the starting point on the Oregon side. The destination state's department of agriculture is the authority on what it will admit. Check both before packing the plants, and if the answer for a particular plant is no, it is better to rehome it in Portland than to have it confiscated at a border station.

For the move itself, the long-distance guide explains how the truck and the family travel on different schedules. Plants on a multi-day drive need water and light on the way, which is one more reason they ride with you.

A 7-item houseplant moving checklist

1. Ask the mover their policy on plants, and plan for them to ride in your own car either way.
2. Two weeks out, prune, inspect for pests, and treat or isolate anything infested.
3. Move plants in fragile or heavy pots into plastic nursery pots, and pack the ceramics separately.
4. Water normally until two or three days before, then stop.
5. Pack pots upright in open, padded boxes, cover the soil, and wrap tall foliage loosely.
6. Load plants last, unload them first into a shaded spot, and keep the car warm or shaded depending on the season.
7. For a move out of state, check the Oregon Department of Agriculture and the destination state's rules before packing.