Most gardening advice assumes a winter that freezes. The mid-Peninsula does not oblige. Our winters are cool, damp, and gentle, which is wonderful for living here and surprisingly awkward for one of spring’s best flowers. If you have ever planted tulips in October and gotten a few leaves and no bloom, the problem was not your thumb. It was your climate.
It is the first week of October, the garden centers are stacking bulb bins by the door, and the planting window is about to open. Here is what works on the Peninsula, what needs a little help, and what you can start this month for flowers by Christmas.
❄️ The Chill-Hour Problem
Many spring bulbs will not flower unless they have spent a stretch of weeks in cold, damp soil. That cold period tells the bulb that winter has happened and it is safe to bloom. In a place with hard winters, the ground does the job for free. Here, soil temperatures rarely stay cold long enough, so some bulbs need to be chilled artificially first.
The practical rule of thumb for mild-winter gardens:
- Tulips, hyacinths, and crocus usually need roughly six to ten weeks of refrigeration before planting. Check the package, since varieties differ.
- Daffodils (narcissus) are the exception among the classics. Many varieties handle mild winters well, and they are among the most reliable bulbs for a Peninsula garden.
- Freesia, ranunculus, and anemone are corms or tubers that do very well in California’s mild winters and are usually planted in fall for spring bloom.
🧊 How to Chill Bulbs in the Refrigerator
- Buy early. Choose firm, heavy bulbs with no soft spots or mold. Early October gives you the best selection.
- Store them in a paper bag (not plastic) in the crisper drawer or a cool part of the refrigerator, at roughly 35 to 45 degrees Fahrenheit.
- Keep them away from fruit. Ripening apples, pears, and bananas give off ethylene gas, which can damage the flower bud inside the bulb. Use a spare fridge, or a drawer that holds only vegetables.
- Mark your calendar. Count out the full number of weeks the package recommends.
- Plant when the chill is done, typically late November to December on the Peninsula, once the soil has cooled and the rains have started.
Once the chilled bulbs are in the ground, they behave like any other. Many Peninsula gardeners treat tulips as a one-season flower, planting fresh chilled bulbs each year, because bulbs left in the ground often do not repeat well in mild winters.
🌼 What Can Go Straight in the Ground
- Daffodils. Plant from October through November, pointed end up, about three times as deep as the bulb is tall. Daffodils are a good choice for beginners and tend to come back year after year.
- Ranunculus and anemone. Soak the dried corms for a few hours before planting, claw side down, and expect flowers in late winter to spring. They are a favorite of floral designers for their layered, almost paper-like petals.
- Freesia. A fall-planted corm that rewards you with some of the most fragrant stems of spring.
- Sweet peas. Seeds go in the ground in fall in mild climates and bloom in spring.
🪴 A Forced-Bulb Project for Your Windowsill
If you do not have a garden, or you want flowers indoors earlier, forcing is the answer. These need no yard and little effort:
- Paperwhites. Set the bulbs in a shallow dish of pebbles with water just below the base. They usually flower in about four to six weeks. Their scent is strong and sweet, and some people find it overpowering, so try one pot before filling the house.
- Amaryllis. Plant a bulb in a pot with the top third showing, water lightly, and keep it in a bright, warm spot. Many bloom roughly six to eight weeks after potting, which makes October the right time to aim for December flowers. Amaryllis is a thoughtful, long-lasting gift too.
- Pre-chilled hyacinths. Sold already prepared for forcing, they can be grown in a pot or in a special hyacinth glass with the roots in water.
Stagger plantings every couple of weeks for a longer display. As the flowers fade, our tips for keeping flowers fresh apply to cut stems from forced bulbs as well.
🐀 Gophers, Squirrels, and Other Bulb Thieves
The Peninsula has gophers, squirrels, and in some neighborhoods deer, and they all think a tulip bulb is dinner. Daffodils are famously unappetizing to them, which is one more reason to plant daffodils. For the rest:
- Plant in wire cages or baskets. Hardware cloth or a bulb basket buried with the bulbs keeps gophers out.
- Use pots. Containers raised off the ground are the simplest defense.
- Cover the soil with wire mesh or mulch until the shoots come up, to discourage squirrels from digging.
🛒 Where to Shop
Bulb selection is best in October and early November, before the popular varieties sell out. Local nurseries often carry bulbs and know which varieties suit the area; our guide to the best nurseries and garden centers near San Carlos is a good place to start. Ask whether the tulips and hyacinths have been pre-chilled, and for the number of weeks.
📅 A Simple Peninsula Bulb Calendar
- Early October: Buy bulbs. Put tulips, hyacinths, and crocus in the refrigerator. Pot amaryllis for December.
- October to November: Plant daffodils, ranunculus, anemone, and freesia. Start paperwhites indoors.
- Late November to December: Plant the chilled tulips and hyacinths.
- December to February: Enjoy amaryllis and paperwhites indoors; watch the first daffodils.
- February to April: Daffodils, then ranunculus, anemones, and tulips. For where to see spring flowers around town, our spring bloom walking guide points the way.
🌷 Why a Florist Cares About Bulbs
Every spring bouquet we make starts the previous fall, somewhere. The tulips that arrive in March were planted months before, and the ranunculus that make a bridal bouquet look like silk were corms in a field last October. Planting a few bulbs yourself is the simplest way to understand how seasonal flowers work, and the payoff is a vase of your own flowers in the middle of winter. For more on how the Peninsula’s climate shapes what thrives here, see our post on fog and the Peninsula garden, and for the early-autumn palette now in the shop, our early-fall bouquets guide.
🎁 The Bottom Line
On the Peninsula, plant daffodils, ranunculus, anemones, and freesia right away, chill your tulips and hyacinths in the refrigerator until December, and pot amaryllis and paperwhites now for flowers on the windowsill by the holidays. Protect the bulbs from gophers, and buy early. If you would rather skip the digging and just enjoy the flowers, browse our arrangements and we will deliver something seasonal across San Carlos, Belmont, Redwood City, and the mid-Peninsula. 🌷