Growli
Let's go

Fertilising guide

How to fertilise Gaura 'Siskiyou Pink' (Oenothera lindheimeri)— schedule & NPK

Also called Siskiyou Pink Gaura, Pink Bee Blossom, Pink Gaura, Lindheimer's Beeblossom.

More about gaura 'siskiyou pink'

About Gaura 'Siskiyou Pink'

Oenothera lindheimeri · also called Siskiyou Pink Gaura, Pink Bee Blossom · flowering

A graceful perennial selection of Gaura distinguished by its rich deep-pink flowers — the deepest pink of the commonly grown forms — held on slender, wiry stems above burgundy-tinged foliage from late spring to frost. Airy and romantic in appearance, it blends beautifully with grasses and other prairie-style plants. Drought-tolerant and long-blooming. Not listed as toxic by ASPCA.

Growth habit: Upright to arching clump-forming perennial with a deep taproot

Watch for — Reversion to white: Deep-pink forms can produce seedlings or shoots that revert to white or pale pink. Remove any paler-flowered seedlings if colour consistency is desired; propagate vegetatively to maintain the true selection.

What fertiliser gaura 'siskiyou pink' actually wants — and why

Gaura 'Siskiyou Pink' is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.

For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for gaura 'siskiyou pink': match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.

How often to feed gaura 'siskiyou pink', and which months

Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For gaura 'siskiyou pink':

Apply a single light dressing of balanced granular fertiliser in early spring only if soil is very poor. Over-rich conditions reduce longevity. In average garden soils, no additional feeding is needed. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

The dormant-season rule matters more than the exact interval: skip feeding entirely when gaura 'siskiyou pink' is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.

What strength to mix for gaura 'siskiyou pink'

Half strength is the safe default for gaura 'siskiyou pink' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

Feeding always goes onto already-damp soil, never dry roots — water gaura 'siskiyou pink' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the gaura 'siskiyou pink' watering schedule.

Signs you are over-feeding gaura 'siskiyou pink'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for gaura 'siskiyou pink':

Signs you are under-feeding gaura 'siskiyou pink'

If the symptoms point at watering, light or roots rather than nutrition, the full gaura 'siskiyou pink' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of gaura 'siskiyou pink' with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

Organic vs synthetic feeds for gaura 'siskiyou pink'

Organic options

A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.

Synthetic / liquid feeds

A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.

Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.

Fertilising gaura 'siskiyou pink' — frequently asked questions

What fertiliser does gaura 'siskiyou pink' need?

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Gaura 'Siskiyou Pink' is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

How often should I feed gaura 'siskiyou pink'?

Apply a single light dressing of balanced granular fertiliser in early spring only if soil is very poor. Over-rich conditions reduce longevity. In average garden soils, no additional feeding is needed. Apply a single light dressing of balanced granular fertiliser in early spring only if soil is very poor. Over-rich conditions reduce longevity. In average garden soils, no additional feeding is needed. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

What strength of feed for gaura 'siskiyou pink'?

Half strength is the safe default for gaura 'siskiyou pink' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding gaura 'siskiyou pink' look like?

Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding gaura 'siskiyou pink' year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.

Should I flush the soil of gaura 'siskiyou pink'?

Flush the pot of gaura 'siskiyou pink' with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

Keep reading