How to Choose Japanese Secateurs: Size, Blade Shape and Cutting Capacity

Japanese secateurs are not one single type of pruning tool. A compact pair for bonsai and flowers, a general garden pruner for live branches, and long shears for shaping shrubs can all look related, but they are designed for different work.

The simplest way to choose is to start with what you cut most often, then compare the tool's size, blade geometry and stated cutting capacity. A larger tool is not automatically better, and two tools of similar length can have very different intended uses.

This guide compares the Japanese secateurs and pruning shears in our current range using manufacturer and verified product information. Where a model has a stated cutting capacity, the figure below is a model-specific guide rather than a rule for every Japanese secateur.

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Japanese secateurs comparison

Cutting capacities below refer to the model's intended pruning work where that specification is established. A dash means we do not use an exact diameter claim for that model in this guide.

1. For general pruning: start with S-13W, S-14, S-S1 or SH-1

If the main job is ordinary garden pruning of live branches, the general-purpose models are the most natural starting point.

The S-13W Classic Garden Secateurs are the reference model in this group: approximately 20.5 cm long, made from high-carbon steel, with a stated live-wood capacity of about 15 mm. The S-14 Slim Garden Secateurs are similar in overall length and capacity but use a slimmer form.

The S-S1 Stainless Secateurs are slightly shorter at 19 cm and use high-carbon stainless steel. They are also specified for live branches of about 15 mm. If you garden in damp conditions or simply prefer a steel with greater corrosion resistance, this is the clearest stainless option in the range.

The SH-1 Walnut Garden Secateurs combine forged high-carbon steel with walnut handles. They belong in the same general-pruning family, but we do not assign an exact cutting diameter to them here because the current evidence for that model is not firm enough to make one useful.

2. For fine pruning: S-19 gives more control over smaller growth

The S-19 Pruning Shears are an 18 cm high-carbon-steel model intended for pine buds, smaller twigs and finer pruning work. Their capacity changes along the blade: approximately 5 mm near the tip and 10 mm near the base.

That difference matters. Cutting capacity is not necessarily uniform from the tip to the pivot. When a manufacturer gives different figures for different parts of the blade, use those figures rather than assuming the whole edge can handle the maximum diameter.

3. For compact pruning: Mini, S-25, S-30 and S-31

Smaller secateurs can be useful when portability, close access or a shorter overall tool matters more than maximum reach.

The S-M1 Mini Garden Secateurs are the smallest here at 14 cm. They are intended for pine and bonsai work, small branches and fresh flowers, with a maximum of about 10 mm near the base of the blade.

The S-25 Small Angled Garden Secateurs are longer at 18 cm and have a notably broader capacity range: approximately 5 mm near the tip and up to 15 mm near the base. They are a useful option when you want a relatively compact tool without giving up the larger base-of-blade capacity found on the main general-pruning models.

The 16.5 cm S-30 and S-31 are a matched compact pair with different geometry. Both are intended for general pruning up to about 10 mm; S-30 is angled and S-31 is straight.

4. Angled or straight secateurs?

Blade geometry affects how the tool approaches the stem, but an angled head does not automatically mean a higher cutting capacity. The clearest comparison in this range is S-30 versus S-31: they share the same compact 16.5 cm format and similar intended capacity, while S-30 is angled and S-31 is straight.

If both suit the diameter of material you normally cut, choose the geometry that makes sense for the access and hand position you prefer. If capacity is the deciding factor, compare the actual model specification instead of using blade angle as a shortcut.

5. For flowers, buds and fine stems: use a flower-focused shear

Flower work does not need the same tool as general branch pruning. The S-17 Traditional Flower Shears use long straight blades for flowers, buds and fine twigs. Their stated capacity is approximately 3 mm near the tip and 5 mm near the base.

The SH-2 Walnut Flower Shears are another flower-focused option, pairing long straight forged high-carbon-steel blades with walnut handles. Their guidance for live material is approximately 3 mm near the tip and 8 mm near the base.

If your work is mainly floristry, cut flowers or ikebana preparation rather than garden pruning, also see our Japanese Flower Scissors collection. The important distinction is the task: a flower shear is selected for precise stem and bud work, while a general secateur is selected for pruning live garden growth.

6. Carbon steel or high-carbon stainless steel?

Most of the SUWADA secateurs in this guide use high-carbon steel. It takes and holds a fine cutting edge, but it should be cleaned, dried and lightly protected after use, especially after contact with sap and moisture.

High-carbon stainless steel, used on S-S1, offers greater corrosion resistance than traditional high-carbon steel. It is not maintenance-free: cleaning, drying and appropriate care still matter. The choice is therefore practical rather than a simple quality ranking.

For detailed care instructions, see the separate Secateurs Maintenance Guide.

7. Understand cutting capacity before you choose

A capacity such as 10 mm or 15 mm should be read as a specification for the model and its intended material, not as a universal promise for every stem of that diameter.

• S-13W, S-14 and S-S1: about 15 mm live wood.
• S-19: about 5 mm near the tip and 10 mm near the base.
• S-M1 Mini: up to about 10 mm near the base.
• S-25: about 5 mm near the tip and 15 mm near the base.
• S-30 and S-31: up to about 10 mm.
• S-17: about 3 mm near the tip and 5 mm near the base.
• SH-2: about 3 mm near the tip and 8 mm near the base.
• Sakagen P-180: up to about 10 mm.

Dry, hard or unusually dense material can behave very differently from fresh live growth. Do not force a hand pruner through material outside its intended task or specification. Move to a more suitable cutting tool when the branch or material exceeds what the secateurs are designed to handle.

8. For shaping shrubs: T-16 is a different kind of tool

The T-16 Long Bush Pruners are 27 cm long and intended for shaping and trimming plants such as privet and box. Their long blades make them a specialist trimming tool rather than a substitute for branch-by-branch secateurs.

If you are making individual pruning cuts on branches, start with a secateur model. If you are repeatedly trimming the outline of a shrub or similar growth, T-16 is the more relevant category of tool.

Which Japanese secateurs should I buy?

Use the job as the first filter:

• General live-branch pruning: S-13W, S-14 or S-S1; SH-1 is the walnut-handled alternative.
• Finer pruning and small twigs: S-19.
• Very compact work: S-M1 Mini.
• Compact but relatively high base-of-blade capacity: S-25.
• Compact angled or straight geometry: S-30 angled or S-31 straight.
• Flowers, buds and fine stems: S-17 or SH-2.
• Compact colourful general pruning: Sakagen P-180.
• Shrub shaping and repeated trimming: T-16.

If two models still fit the same job, compare overall length, geometry, steel and the way you prefer the tool to sit in your hand. Fit is personal, so model specifications are a better starting point than broad claims that one design suits everyone.

Frequently asked questions

Are all Japanese secateurs basically the same?

No. Japanese makers produce general pruners, fine pruning shears, flower shears, bonsai tools and long trimming shears. The country of manufacture does not replace the need to choose the correct tool type.

Does a longer pair of secateurs cut thicker branches?

Not necessarily. S-25, for example, is 18 cm long yet is specified up to about 15 mm near the base, while other similarly sized tools are intended for finer work. Compare the model's stated capacity and task rather than length alone.

Why do some models have two cutting-capacity figures?

On models such as S-19, S-25, S-17 and SH-2, the stated capacity is smaller near the tip and larger near the base. The blade has more leverage closer to the pivot, so model-specific figures distinguish those positions.

Are angled secateurs stronger than straight secateurs?

Blade angle by itself does not establish strength or cutting capacity. S-30 and S-31 are a useful example: one is angled and the other straight, but both are compact general-pruning tools with a similar stated capacity. Choose geometry for access and working position, and capacity from the actual specification.

Should I choose carbon steel or stainless steel?

Choose based on use and maintenance preferences. High-carbon steel is used across much of the SUWADA range and should be cleaned, dried and protected after use. High-carbon stainless steel offers greater corrosion resistance but still benefits from proper care.

Can I use garden secateurs for flowers?

Some compact models can handle fresh flowers, but dedicated flower shears are designed around that task. If flowers and fine stems are your main work, S-17, SH-2 or a model from the Flower Scissors collection is the clearer starting point.

How should I maintain Japanese secateurs?

Clean and dry them after use, keep the pivot appropriately lubricated, sharpen with a suitable stone when necessary and store them dry. See our full maintenance guide for the detailed process.

A better way to choose: task first, model second

Japanese secateurs are most useful when the tool matches the work. Start with the plant material and typical branch diameter, then narrow the choice by tool size, blade geometry and steel. That approach is more reliable than choosing by appearance, price or a single maximum-capacity number.

Compare the complete Japanese Secateurs collection or explore the broader Japanese Gardening Tools collection.