The side return that gets four feet of sky

Buy nothing yetMove the table before you buy the pergola.

Before you buy a pergola, move the table.

Every change below is put into the plan and the whole model is run again. That is why a pergola's winter cost shows up here without anybody having written it down, and why the cheapest thing that actually buys hours back is allowed to win.

Reading at

1:00 PM·October

Where it stands now

Something growing here

The herb pots does not work for growing things on a day like this, and how long it stays wet is why.

“No” means the model does not support this use under the conditions being read. The controlling limits are listed below.

  • Past the limit How long it stays wet is about 24h — 14h over (at most 10h)Estimate: Worked out, but at least one input was assumed rather than measured.

    An outdoor cushion soaked here in Oct would not dry before nightfall.

    Roots and foliage sitting wet kill more plants than the wrong hardiness zone does.

  • Past the limit Usable light is 1.2 mol/m2/day — 4.8 mol/m2/day under (at least 6 mol/m2/day)Worked out: Computed from the geometry, the sun and the weather you gave it.

    About 1.2 moles of usable light a day, which is deep shade. Most things sold as shade plants still want more than this.

    Plants respond to the light that actually arrives over a day, not to the label on the tag. Below about six moles a day, very little thrives rather than merely surviving.

What would change this. This would change if how long it stays wet were measured and came out differently. The figure is an estimate, not a tape.

Confidence medium (60%). Enough to point in a direction, not enough to buy against.

What this answer was built from
Use
Something growing here
Place
The herb pots
Weather
Temperate maritime, mild, grey, damp (scenario shape) (from a published source)
Method
A whole day in October, traced against the scene rather than read at one hour
NoteSomething growing here is read across a whole day or year rather than at one hour, so single changes are compared on the questions pages instead. Go there.