A wooden flower press is two rigid boards that squeeze a flower between absorbent paper and cardboard layers, drying it flat in two to four weeks.
Fresh blooms wilt within days; a wooden press stops that clock by removing water fast enough to hold the shape, which is why pressed violets pulled from an old book still show their veins a century later. The device is nothing more than wood, paper, and pressure, and the pressure is the part most people get wrong. The Royal Horticultural Society documents the whole method, and its numbers are worth trusting: two to four weeks in a warm, dry spot.
What Is Inside a Wooden Flower Press?
Four kinds of parts: two boards, rigid separators, absorbent paper, and hardware that clamps the stack together. Skip any one and the specimen suffers.
- Two wooden boards. Flat, dry, and stiff. The RHS Plants press uses sustainable pine with polyester webbing straps.
- Cardboard separators. Rigid sheets that spread pressure across the stack and let air move between layers.
- Blotting paper. The absorbent layer that touches the flower and pulls moisture out of the petals.
- Bolts and wing nuts, or straps. The clamping force. A homemade press can use bolts, wing nuts, string, or straps.
Sizes and prices vary. Acid-free blotting paper costs more but protects long-term color and reduces staining.
How Does a Wooden Flower Press Actually Dry a Flower?
Two forces run at once: the boards flatten the plant while the paper wicks water away, so the flower dries flat instead of shriveling. The RHS layer order: fold each specimen inside blotting paper, then stack cardboard, folded newspaper, the blotting-paper folder, and more newspaper, repeating as needed and finishing with a final cardboard layer. The second board goes on top, bolts go through, and the wing nuts tighten until the pile is compressed without crushing delicate petals.
The press goes somewhere warm and dry, such as an airing cupboard or conservatory. Thin, flat flowers and leaves dry fastest; thick, fleshy blooms take the long end. If building your own, the RHS recommends drilling bolt holes about 15 mm from each corner of both boards; wear eye protection and keep fingers and loose clothing clear of the bit.
If you would rather skip the build, this roundup of tested wooden flower presses compares board size, hardware, and price in one place.
| Part | What It Does | What Goes Wrong |
|---|---|---|
| Wooden boards | Apply flat, even pressure top and bottom | Warped boards leave ridges and uneven flattening |
| Cardboard separators | Spread force and allow airflow between layers | Missing layers concentrate pressure in one spot |
| Blotting paper | Absorbs moisture from petals and stems | Reused while damp causes staining and mold |
| Bolts and wing nuts | Clamp the stack under steady pressure | Overtightening crushes delicate structures |
| Parchment or acid-free paper | Stops sticking and slows long-term decay | Skipping it lets specimens bond to the paper |
| Warm dry storage | Finishes drying over two to four weeks | Humid basements invite mildew and browning |
Which Mistakes Ruin Pressed Flowers?
Most failed presses come down to water, not wood. The RHS method prevents a short list of errors: pressing flowers still wet from rain or dew, packing petals so they overlap, cranking the wing nuts until delicate parts break, and placing plants straight against wood with no absorbent layer. A sealed container or poorly ventilated spot traps moisture and invites fungal growth.
Two timing mistakes matter as much. Pulling a specimen out before it is bone dry means it curls as it finishes drying in open air, and reusing blotting paper that still holds moisture puts water back into the next batch. Let every sheet dry thoroughly first; when in doubt, wait the extra week.
Do You Need Anything Special to Get Started?
No power, software, subscription, or regional compatibility check. Availability, currency, shipping, and retailer terms are the only real limits on buying one. Collect clean, dry specimens, remove unwanted stems and lower leaves, and keep the stack warm and dry until the four-week mark. Everything else is paper and patience. The payoff shows up years later, when a pressed bloom still holds the color of the afternoon it was picked.
Common Questions
How long should flowers stay in the press?
Two to four weeks for most flowers, the range the Royal Horticultural Society gives. Thick, water-heavy blooms may need the full month, while thin leaves and small flat flowers often finish sooner. Check by lifting a corner of the blotting paper: a specimen that still feels cool or limp needs more time.
Can I use newspaper instead of blotting paper?
Newspaper works as a backup because it absorbs moisture, and the RHS method actually uses folded newspaper between cardboard layers. Blotting paper still does the direct-contact job better since it pulls water without ink transferring onto pale petals. If newspaper is all you have, keep it one layer away from the flower itself.
Why did my pressed flowers turn brown or moldy?
Moisture that never escaped is the usual cause—flowers pressed wet from dew, damp blotting paper, or a humid storage spot like a basement all trap water inside the stack. Swap out soggy paper when you notice it, keep the press warm and airy, and give specimens the full drying window before removing them.
Sources
- Royal Horticultural Society. “Pressing Flowers and Leaves” Supports the layering method, drying times, drilling guidance, and common mistakes.
- RHS Plants. “Wooden Flower and Herb Press with Straps” Supports materials, dimensions, price, and three-to-four-week product instructions.
- Eden Brothers. “Wooden Flower Press” Supports the $39.99 large press price and approximate 9 × 10 inch size.