From 2.4k real designs
What to plant with Astilbe
These are what gardeners actually planted. We measured every Sow design containing Astilbe and ranked the plants that turn up alongside it far more often than chance would explain.
Used together in 91 designs — 14.27× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–7 with Astilbe; takes the same shade; blooms late spring to Astilbe's mid-summer; adds height behind Astilbe.
Used together in 47 designs — 13.01× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; blooms mid-spring to Astilbe's mid-summer; adds height behind Astilbe.
Used together in 201 designs — 11.7× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; takes the same shade; blooms early spring to Astilbe's mid-summer.
Used together in 49 designs — 9.47× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; takes the same shade; blooms late spring to early summer to Astilbe's mid-summer; fills in front of Astilbe.
Used together in 57 designs — 9.37× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–9 with Astilbe; takes the same shade; blooms late spring to late summer to Astilbe's mid-summer.
Used together in 111 designs — 9.25× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; takes the same shade; blooms mid-spring to Astilbe's mid-summer.
Used together in 56 designs — 9.11× more often than this plant appears in gardens generally.
Why it works: shares Zones 5–9 with Astilbe; takes the same shade.
Used together in 70 designs — 8.5× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–9 with Astilbe; blooms late spring to Astilbe's mid-summer; adds height behind Astilbe.
Used together in 88 designs — 8× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; takes the same shade.
Used together in 45 designs — 7.81× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–9 with Astilbe; takes the same shade; blooms mid-spring to Astilbe's mid-summer; fills in front of Astilbe.
Used together in 101 designs — 7.48× more often than this plant appears in gardens generally.
Why it works: takes the same shade; blooms late spring to fall to Astilbe's mid-summer.
Used together in 70 designs — 7.32× more often than this plant appears in gardens generally.
Why it works: shares Zones 4–8 with Astilbe; takes the same shade; blooms early summer to Astilbe's mid-summer; fills in front of Astilbe.
Zones 4–8Care & prices →
Method: we counted every Sow design containing Astilbe (2.4k of them), then scored each other plant by how much more often it appears in those designs than in designs generally (lift), requiring at least 40 shared designs. Ranking by lift rather than raw count is what stops the list collapsing into “the most popular plants”.
Astilbe pairing questions
What should I plant with Astilbe?
Across 2.4k real garden designs containing Astilbe, the partner that shows the strongest affinity is Ostrich Fern — it appears alongside Astilbe far more often than its overall popularity would predict. The full ranked list is above.
How was this companion list decided?
From data, not opinion. We looked at every Sow design containing Astilbe and measured which other plants appear with it more often than chance would explain (a lift score), requiring at least 40 shared designs so nothing here is a small-sample fluke. That is why the list reads like a coherent planting palette rather than a list of bestsellers.
Do companion plants need the same conditions as Astilbe?
Yes — that is the first filter. A companion has to share the hardiness range and light exposure, or one of the two will struggle. Each entry above states the zones it shares with Astilbe and whether it wants the same light; pairings that differ in bloom time or height are noted, because that contrast is usually the point.
Keep exploring
Try these pairings in your own yard
Snap a photo of your space and place Astilbe and its companions in it at true mature size — before you buy any of them.
