
Microphyllum
‘Microphyllum’ is an original Acer shirasawanum (full moon maple), with smaller leaves than most shirasawanum while still keeping the “full moon” texture (rounded leaves, often slightly cupped). In spring it starts a soft green, almost yellow, then deepens to dark green in summer, before putting on a bright yellow-to-orange autumn show, sometimes reaching orange/red tones depending on conditions. An excellent choice for medium-sized gardens and for growing in a large container.
Character & interest
Its main appeal is the contrast between a “full moon” look and a finer leaf scale, giving a more delicate reading and a very elegant silhouette. It keeps dense summer foliage, then changes very clearly in autumn.
Colours
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Spring : soft green to almost yellow (very luminous).
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Summer : dark green.
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Autumn : yellow to yellow-orange; orange and sometimes red tones may appear depending on exposure, soil moisture/coolness, and temperature swings.
Habit & vigour
Large shrub / small tree habit, rather upright and broad. Moderate vigor: steady growth in cool, moist soil, without being a very fast cultivar.
Indicative size
Observed orders of magnitude depending on sources and training:
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around 1.8 to 2.4 m tall at about 10 years (often),
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with a spread that can become significant with age,
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long term, generally in the 2 to 4 m range (variable with conditions).
Exposure
Bright partial shade recommended. Gentle sun (morning) is possible if the soil stays cool and moist; avoid harsh afternoon sun, especially in containers. A sheltered position protected from dry winds is advised.
Origin & history
The name ‘Microphyllum’ literally means “small-leaved”. Several sources agree that this cultivar was introduced by the Esveld nursery (Netherlands) from a clone originating from the Botanical Garden of Coimbra (Portugal).
| Habit | Upright |
|---|---|
| Vigueur | Modérée |
| Taille 10 ans | Moyen (2-4m) |
| Forme de feuille | Shirasawanum |
| Couleur Printemps | Vert tendre |
| Couleur Été | Vert foncé |
| Couleur Automne | Jaune / Orange |
| Exposure | Soleil / Mi-ombre |
| Size / Grade | C1, C1.5, C10, C2, C3, C5, C7.5, P9 |

