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A second flush: because one wasn’t enough 🤷
Family: Pinaceae · Pot diameter: 19cm · Height: approximately 25cm
Picea glauca ‘rainbows end’® hides a small surprise within its calm green symmetry. Fine needles weave a dense cone, and at the young tips light seems to become colour. A lemon-yellow glow touches the outline, leaving deeper green behind it, as though the crown were lit from within. It is one of those plants that gives a corner a clear shape and, at the right moment, adds an unexpected note of joy.
The contrast remains delicate and full of depth: bright tips stand out against older foliage without breaking the unity of the little cone. Beside dark leaves or a simple stone surface, this meeting of colours becomes even clearer. Its appearance combines the order of a considered planting with the vitality of a change worth waiting for.
A dense, dwarf conical selection of Picea glauca, with a particularly luminous second flush of growth in summer.
Fresh spring growth appears light green to yellow-green. The second flush, usually in midsummer, stands out with lemon-yellow tips.
Short branchlets and numerous small needles form a compact cone, related in shape to ‘Conica’.
Older needles retain their green tone. The colour emphasis belongs to new growth and changes as it matures.
Why you will love it: it combines the calm of a small evergreen cone with a bright seasonal surprise, without needing flowers to change its appearance.
Give it a place where its young tips can be enjoyed closely, in a low planting or a roomy pot with drainage. Allow up to approximately 1m of width for the future crown. In warm regions, choose morning sun and protection from intense afternoon exposure.
Deep purple leaves and curving, grass-like foliage highlight the luminous tips. Build the composition in cool, well-drained soil, keeping neighbouring foliage outside the dense cone.
Sun in cool climates. In warm regions, provide morning sun, light afternoon shade and protection from reflected heat.
Maintain even moisture without waterlogging. Check pots and the period of fresh summer growth particularly carefully.
Very cold hardy, rated RHS H7. Its bright young tips need protection from a hot, drying microclimate.
An ornamental plant, not for consumption. Wear gloves when handling and keep needles or resin away from the eyes.
Choose a cool position with plentiful light and gentle air circulation. Avoid drying winds, hot paving and walls that reflect intense heat.
Water thoroughly when the surface layer begins to dry, checking a little deeper too. Do not let the soil dry completely or keep the roots permanently wet.
Choose acidic to neutral, well-drained soil that retains moisture. In a pot, use a good-quality growing medium with stable structure and free drainage.
Apply a modest spring feed if needed, following the rate on the packaging. Seasonal yellow new growth does not itself indicate nutrient deficiency.
Clipping is unnecessary to preserve the cone. Remove dead or broken branchlets and avoid cutting deeply into bare old wood.
Inspect the dense inner crown for dull, stippled needles and mites. A gentle tap over white paper can reveal tiny moving specks.
Keep the trunk base at the existing soil level. A pot with drainage holes helps moisture management, but gradual repotting is needed as roots fill the available space.
Allow approximately 1–1.5m in height and 0.5–1m in spread over around 10–20 years. About 1m tall and 0.6m wide is a useful ten-year reference; slow growth continues with age.
The first flush produces light green to yellow-green tips, which gradually deepen in colour.
The second flush, usually in midsummer, emerges lemon-yellow against the older green foliage.
The new needles mature towards green while the dense evergreen crown retains its conical outline.
Indicative development of approximately 1–1.5m in height and 0.5–1m in spread over 10–20 years. Around 1m tall and 0.6m wide is a useful ten-year reference. The crown remains dense and conical, with slow continuing growth.
The comparison shows the same conical structure during two flushes. Yellow belongs to the young tips above older green foliage.
What to expect after planting: The strength and duration of yellow vary with climate, light and the vigour of new growth. The cultivar does not remain entirely golden yellow throughout the year.
The story of Picea glauca ‘Rainbow’s End’ begins with the older dwarf cultivar ‘Conica’, known for its dense, clearly conical crown. Within this familiar green form, a natural colour variation appeared on a shoot. It preserved the compact architecture while adding a different way for new growth to stand out.
In 1978, at Iseli Nursery in Boring, Oregon, Don Howse found the selection that became known as ‘Rainbow’s End’. Its interest lay in the bright young tips, particularly the second flush of growth, which brought lemon-yellow colour into summer. A small feature of its growth became the whole personality of a new garden conifer.
Iseli Nursery introduced the selection as a distinct cultivar, and it found a place in small-conifer collections and plantings on both sides of the Atlantic. Its story rests on noticing unusual growth on an already cherished plant, rather than artificially shaping a different outline. The little green cone kept its form and gained a second luminous moment within the year.
Each spruce needle sits individually on a small woody projection from the twig. When the needle falls naturally, this base remains, giving the bare twig a rough surface. This tiny feature helps identify the genus Picea even from a section of shoot that has lost its foliage.
A Picea glauca needle is approximately four-sided in cross-section. Each surface usually carries two to five rows of stomata, the microscopic pores that allow gas exchange. Even this small leaf surface therefore has organised zones through which it communicates with the surrounding air.
Six answers about yellow colour, the two flushes and care of the dense cone.
Usually during the second flush, in midsummer. Spring growth is a gentler light green to yellow-green.
No. Young tips provide the bright seasonal contrast and gradually turn greener as they mature. Older foliage forms the green background.
Not when it appears on healthy young tips within the expected seasonal cycle. If it accompanies drying or occurs irregularly across whole branches, check growing conditions and the needles.
Approximately 1–1.5m tall and 0.5–1m wide over 10–20 years is an indicative range. Growth is slow and continues with age rather than stopping at an absolute measurement.
Yes. The dense conical architecture is a natural cultivar characteristic. Protect the leader from damage and allow light around the crown.
Yes, on a cool, bright balcony with free drainage and attentive watering. Intense afternoon exposure and reflected heat can damage young tips.
