How to Dry Flowers: Air-Drying, Silica Gel and Microwave

By the Garden Voila editorial team · Updated October 30, 2026 · How we verify

Dried flowers keep summer going all winter, in wreaths, bouquets, jars and gift tags. The good news is that drying flowers needs no special equipment: a dark closet and some rubber bands are enough for many varieties. For brighter color and better shape, silica gel and the microwave offer faster, more precise results.

When to pick flowers for drying

• Time of day: mid-morning, after dew has dried. Wet flowers mold.
• Stage: just before or as they reach full bloom. Flowers keep opening slightly as they dry, and fully open blooms tend to shed.
• Condition: choose the best blooms you have. Blemishes become more obvious after drying.
• Stem length: cut stems longer than you need; you can trim later.

The best flowers for drying

These “everlastings” dry easily and hold their color:

• Strawflower, statice, globe amaranth and celosia
• Lavender, yarrow and tansy
• Baby’s breath, larkspur, nigella pods and poppy seed heads
• Hydrangea, roses (especially buds) and sea holly
• Ornamental grasses and wheat

Blue and yellow flowers usually keep their color best; pinks and reds often fade or darken. Most of these are easy to grow from seed; see our cut flower garden guide to plan a drying bed.

Method 1: air drying (hang drying)

Best for: lavender, statice, strawflower, yarrow, roses, grasses. Time: 2 to 3 weeks.

1. Strip the leaves from the stems.
2. Gather 5 to 10 stems into small bunches. Small bunches dry evenly and resist mold.
3. Secure with a rubber band, which tightens as stems shrink.
4. Hang the bunches upside down from a hanger, line or hook, a few inches apart.
5. Choose a dark, dry, warm and well-ventilated spot, such as a closet, attic or spare room. Sunlight fades color, and humidity causes mold.
6. They are ready when stems snap cleanly and petals feel papery.

Drying hydrangeas in a vase

Hydrangeas dry best upright. Cut heads in late summer when the petals start to feel papery, place them in a vase with 2 inches of water and let the water evaporate. They dry in one to two weeks with good color.

Method 2: silica gel

Best for: roses, zinnias, dahlias, peonies, ranunculus, daisies. Time: 2 to 7 days.

1. Cut stems to about 1 inch below the flower head.
2. Pour an inch of silica gel into an airtight container.
3. Set flowers face up on the gel (flat flowers such as daisies can go face down).
4. Gently spoon more gel between and over the petals until they are completely covered, keeping the shape intact.
5. Seal the container and leave for two to seven days, depending on the flower’s thickness.
6. Pour off the gel slowly and lift the flowers out. Brush off any crystals with a soft paintbrush.

Reuse silica gel by drying the crystals on a baking sheet in a warm oven until any color indicator returns to dry.

Method 3: microwave drying

Best for: thin-petaled flowers when you want speed. Time: 1 to 3 minutes, plus a day to cool.

1. Bury flowers in silica gel in an uncovered, microwave-safe glass container.
2. Place a cup of water in the microwave alongside it, to prevent over-drying.
3. Heat on low to medium power: about one minute for small or thin flowers and up to three for dense ones. Check often, since microwaves vary.
4. Leave the flowers in the gel for 12 to 24 hours to finish drying and cool completely.

Never microwave flowers without the silica gel and water cup, and do not use metal containers or wire.

Other drying methods

• Borax and cornmeal: a cheaper desiccant mix used like silica gel. It takes one to three weeks.
• Pressing: for flat flowers to frame or use in crafts. See how to press flowers.
• Glycerin: for supple foliage rather than flowers. Covered in our overview of how to preserve flowers.

Caring for dried flowers

• Display away from direct sunlight and humidity.
• Spray lightly with unscented hairspray or a floral sealer to reduce shattering.
• Dust with a hair dryer on cool, held at a distance.
• Expect dried arrangements to look their best for about a year, after which colors fade.

Drying times at a glance

Ideas for using dried flowers

• Bouquets and bud vases: mix dried grasses with statice and strawflower for long-lasting arrangements.
• Wreaths: wire small bunches onto a straw or grapevine base.
• Potpourri: combine dried petals with lavender and a few drops of essential oil.
• Gift wrapping: tuck a sprig of dried lavender or a rose under the ribbon.
• Table decorations: scatter dried petals or arrange stems in a low bowl.

Troubleshooting dried flowers

• Mold or a musty smell: bunches were too big or the room too humid. Use smaller bunches and better airflow.
• Drooping heads: flowers were picked too late or hung too slowly; pick earlier and hang upside down immediately.
• Petals falling off: flowers were too open. Pick just before full bloom and spray lightly with hairspray once dry.
• Brown or faded color: too much light or heat during drying. Keep them in the dark.

Step by step with extension numbers

Iowa State University Extension suggests picking flowers free of dew, rain, and insect or disease damage, stripping foliage, and tying stems into small bunches with rubber bands. Hang bunches upside down in a warm, dark, dry, well-ventilated place such as an attic or shed. Hanging keeps stems straight, and drying takes about two or three weeks. University of Missouri Extension adds that bundles tighten as stems shrink, that large flowers such as peony and hydrangea should be hung individually, and that strawflower needs a wire stem substituted before drying. Avoid damp rooms and direct sun.

Desiccant drying

Iowa State describes three desiccants: sand-borax at 2 parts borax to 1 part fine dry sand, borax-cornmeal at equal parts, and silica gel, which it calls probably the best material. Borax mixes take about 1 to 2 weeks, while silica gel takes about 3 to 7 days, keeps color well, costs more and can be reused indefinitely. Silica gel needs an airtight container such as a shallow cookie tin or plastic box; borax mixes can be left uncovered in a sturdy cardboard box. Start with 1/2 to 1 inch of drying material, lay spike flowers such as snapdragons on their sides, dry most flat-faced flowers face up, and sift the material gently over and around petals until fully covered. Add 1 or 2 tablespoons of uniodized salt per quart to borax mixes to retain color.

Silica gel drying times

Missouri gives times by flower: about 1 day for daylily and yarrow; 2 days for daisy, larkspur, lilac, sunflower, sweet pea, tulip and verbena; 2 to 3 days for cosmos, daffodil, dahlia, delphinium, gladiolus, iris, pansy, peony, rose, snapdragon and zinnia; 3 days for foxglove; 3 to 4 days for marigold and stock; and 4 to 5 days for hyacinth. Poppies are unsuitable because they shed petals. Check flowers periodically, and drying is done when they are crisp and dry to the touch.

Wiring and recharging silica gel

Remove all but 1 or 2 inches of stem and use 20- or 24-gauge florist wire, running it through the stem and up into the flower head for daisies, marigolds and zinnias. For flowers with hard bases, such as roses, push wire through the base at a right angle to the stem. To recharge silica gel, spread it 1/2 to 3/4 inch deep and bake at 250 degrees F for about an hour, stirring occasionally, until indicator crystals turn blue again; pink means it needs redrying. Store it airtight.

Drying checklist and common mistakes

1. Pick dry. Choose flowers free of dew, rain and damage, and slightly immature for air-drying.
2. Strip foliage. Remove leaves, which hold moisture and rot.
3. Bundle small. Tie with rubber bands, which tighten as stems shrink.
4. Hang in the dark. A warm, dry, dark, ventilated spot like an attic or closet works; avoid damp rooms and direct sun.
5. Wait. Allow two to three weeks.
6. Store sealed. Keep insects out of stored material.

The most common mistakes are cutting wilted flowers, hanging bundles in a damp basement, using bunches that are too thick so the centre never dries, and leaving flowers in direct sun, which bleaches color.

Which method for which flower?

Hang large flowers such as peony and hydrangea individually, and dry flat-faced, many-petaled flowers such as daisies, marigolds and zinnias in silica gel with wired stems. Dry spike flowers such as snapdragons lying on their sides in the desiccant. Missouri notes that thick-petaled flowers do not work well in the microwave, and that dense, many-petaled flowers take about 3 minutes and small or thin-petaled flowers about 1 minute, followed by 12 to 24 hours in the gel to cool and finish drying.

Microwave safety and finishing

Use heat-tolerant glass or microwave-safe containers, uncovered, with the flowers buried in silica gel and a cup of water in the oven. After drying, spray with hairspray or lacquer to slow moisture reabsorption, and store airtight. Dried flowers are not permanent, so plan to replace them yearly if possible and discard them when they fade.

Using dried flowers

Make wreaths, swags, dried bouquets and table arrangements, or use them in pressed cards. For heavier arrangements attach an 18-gauge stem wire with floral tape. Keep them away from humidity and sun. A bunch of lavender or roses hung in a closet also scents linen as it dries.

Frequently needed details

How do I know flowers are dry enough?

Iowa State says drying is done when flowers are crisp and dry to the touch. Petals that feel cool or leathery still contain moisture. Leave them longer rather than risk mold in storage.

Why did my flowers fall apart?

Brittle petals are normal when removing flowers from silica gel, so work carefully and brush off residue with a soft brush. Fully open flowers and poppies shed petals; pick slightly immature flowers for air-drying and choose sturdier types. Glue loose chrysanthemum petals with clear-drying glue, as Missouri suggests.

Can I dry flowers in the oven?

The sources reviewed here describe air-drying, desiccants and microwave methods; the Missouri publication warns that excessive heat can brown flowers, so low heat is risky. If you try an oven, keep the temperature very low and watch closely.

How long do dried flowers last?

They are not permanent. Replace them yearly if possible and discard them when they fade.

Can I dry flowers from a bouquet?

Yes, if they are in good condition, but do it as soon as possible and do not use wilted flowers.

Timing your drying through the season

Dry flowers throughout the growing season rather than waiting for one big harvest. Missouri says materials can be collected from early spring to late fall. Early flowers such as lilacs and pansies suit desiccants and pressing, summer blooms such as zinnias, marigolds, roses and larkspur suit silica gel and hanging, and autumn seedheads and foliage suit air-drying and glycerin. Because air-drying takes two to three weeks, start hanging bunches by early fall so they are ready for holiday arrangements. Keep a notebook of what you dried and how it turned out, so next year you can repeat the successes and drop the disappointments.

Sources and further reading

• Garden flowers bloom all year when dried, University of Missouri Extension
• Preserve flowers from home gardens and special occasions, University of Illinois Extension
• Preserving flowers, University of Illinois Extension

Frequently asked questions

Reviewed October 2026. Sources: Iowa State Extension: Drying flowers University of Missouri Extension G6540: Drying flowers and foliage for arrangements