California Beekeeping Calendar: Month-by-Month Hive Tasks

A warm January afternoon can make a Santa Cruz hive look ready for spring. The next week may bring cold rain and very little flying. Use a beekeeping calendar to remember what to check, then let the colony, its food stores and the weather determine what happens next.

The months below organize a year of inspections, equipment work and decisions. They are a starting point for Santa Cruz County and the Central Coast, not a schedule to shift forward or backward by a fixed number of weeks. A new package and an established colony in the same yard can need different care.

Keep three records through the year

At each suitable inspection, note colony strength and brood, available food and space, and the latest mite result. Add the next action and a date to check it. A short record that you actually use is more helpful than trying to remember whether the hive felt heavier last month.

The UC Davis Northern California backyard beekeeping timeline separates first-year colonies from established hives. Use that distinction as you plan: a new colony may spend its season building comb and stores, while an established one may need room for surplus honey.

Varroa monitoring belongs throughout the active season. USDA guidance on when to sample for varroa recommends summer checks about monthly and more frequent fall sampling, weather permitting. Use an appropriate sampling method, current regional guidance and the colony's condition to interpret the result. A treatment date on last year's calendar cannot replace a current count.

January and February: check what winter has left you

January

Review food stores without unnecessarily opening the brood nest in cold weather. Learning to heft a hive can help you notice a weight change, but get experienced help interpreting what you feel. Arrange feeding when the colony needs it, before it is close to starvation. A few returning foragers do not prove that enough food is coming in.

Use wet days for equipment repair, reading and arranging a mentor. If you are starting this year, check supplier dates and prepare the site before reserving bees. Include annual registration in the winter paperwork; our California beekeeping laws guide explains the separate registration and siting questions.

February

On suitable days, assess the colony's progress with your mentor. Look at food, brood and usable space together. A growing colony can need more attention before the rest of the garden looks particularly springlike.

Notice early flowers near the hive, but keep bloom observations separate from a food assessment. UC Master Gardeners describe manzanitas as winter nectar sources. The US Forest Service common manzanita profile is one reference for a native winter-flowering plant. Which plants are flowering, and whether bees can reach them in the weather, varies by site and season.

March and April: stay close to expanding colonies

March

Spring growth can make last month's spare equipment useful quickly. Have boxes and frames ready, and assess whether bees need more usable space. For a new installation, follow the supplier's instructions and the First-Year Beekeeping in California Timeline; do not borrow an established colony's harvest schedule.

Learn to distinguish queen cups, occupied queen cells and other changes in the brood nest. Finding a cell is a reason to assess the colony, not to cut it out automatically. Arrange inspections often enough to follow changes during swarm preparation, with the interval set by conditions and experienced guidance.

April

Keep watching space, brood and swarm preparations. Adding a box can help with crowding, but it does not guarantee that a colony will stay. A split also involves decisions about queens, brood, food and the health of both resulting colonies. Get help before trying one for the first time.

Continue mite monitoring while the colony looks strong. If action is needed, choose an appropriate product registered for that use in California and follow its complete label. Plan around honey supers and temperatures without postponing a needed response simply because harvest is ahead.

May and June: follow the incoming nectar

May

Watch how the colony is using its space rather than assuming that every May brings a large honey flow. Bloom and favorable flying weather create opportunities; the hive still has to show that food is arriving. Add space when needed and keep access manageable for inspections.

Our guide to The Best Bee-Friendly Plants for California Gardens by Season can help you notice the flowering sequence around the garden. Keep your own notes on bloom and hive weight. After a few seasons, those observations will be more useful than an exact statewide peak date.

June

As the landscape dries, reassess incoming food and stored honey. One yard may still have forage while another colony is using its reserves. Continue checking mites and queen performance, along with whether more storage space is useful.

Begin assessing any possible harvest with someone experienced. The first question is what the colony can spare. The next is whether the honey and equipment are suitable for harvesting. Our guide to Harvesting Honey for the First Time follows those decisions in more detail.

July and August: watch food and mites together

July

A dry summer can bring a forage shortage, often called a dearth. Keep water available and watch for robbing. Avoid leaving honey or syrup exposed around the apiary. Entrance management should help the colony defend itself while still allowing appropriate ventilation in the heat.

Harvest only a demonstrated surplus. Honey supers do not create a blanket ban on all mite treatments: restrictions differ by product. Read the label for the exact formulation, including temperature limits, protective equipment and whether supers may remain. Never put an unapproved chemical into a hive.

August

Late summer deserves close attention, but it should not be your first mite check. Compare recent results and act on the appropriate guidance for the colony. Then plan the follow-up sample that will tell you whether treatment worked.

Mississippi State Extension's varroa guide explains the use of action thresholds and the limits of applying them across different conditions. Its regional examples are not a universal California threshold. Learn the sampling procedure properly; Penn State's alcohol-wash guide provides a method reference. Protect the queen when collecting a bee sample.

September through November: prepare with time to respond

September

Review mite results, queen performance and food stores before shortening the inspection routine. If a colony is weak, find out why. Combining it with another hive without understanding a disease problem can spread the problem rather than solve it.

Make a plan with your mentor for any feeding, queen issue or colony combination. Leave enough time to assess the response. It is easier to change the plan while the weather still offers workable days.

October and November

Continue checking food reserves and protection from rain and wind. A mild climate does not provide a reliable single number of pounds to leave in every hive. Colony size, site, season length and available forage all matter. Ask for a local assessment and keep following the weight trend.

A broodless period can be relevant to some mite-control methods, but do not assume a California colony is broodless because November has arrived. NC State Extension's oxalic-acid guide explains why brood status and formulation matter. Use the current registered product label, required protection and suitable equipment; a calendar is not an application recipe.

December: keep the useful notes

Limit disturbance when bees are clustered or weather is unsuitable. Continue checking the hive's condition and food needs using methods appropriate to the season. Winter care is quieter work, not an instruction to ignore a light or struggling colony.

Review the year's notes before ordering more equipment or bees. Which inspections led to useful action? When did stores begin falling? Did the follow-up mite count show the result you expected? Carry those lessons into next year's plan.

Adjust by the hive, not the town name

A sheltered coastal yard, an exposed ridge and a cold valley bottom may follow different patterns. Even nearby hives can differ because of their strength, queen, food and health. Avoid assigning all inland gardens an earlier season or all foggy gardens a gentler one.

Record weather and bloom alongside the colony observations. A flowering shrub is a useful clue; it does not establish that brood rearing, swarm preparation or a nectar flow has begun. Check the hive before making the next management decision.

Frequently asked questions

When should I start checking for swarm preparations?

Begin as the colony expands and local conditions favor growth, with guidance from a mentor. Keep suitable equipment ready. Do not wait for a fixed March date or assume the risk ends in April.

Is August the month to treat for varroa?

It is an important time to pay attention, but treatment depends on monitoring and current guidance. A spring or early-summer problem needs a response then. Check the label and assess the result afterward.

Will my bees need winter feeding?

That depends on their stores and consumption. Mild days do not guarantee adequate forage. Monitor reserves and get help deciding what feeding is appropriate before the colony becomes dangerously short of food.

Can I harvest in July?

Possibly, if the colony has a suitable surplus. A new colony may have none to spare. Decide from the hive and the honey, with experienced help, rather than the month.

What should go in my hive notebook?

Record the date, colony observations, food and space, mite method and result, any treatment or feeding, and the next check. Include the exact product and application details when treating. Keep enough detail to understand what changed.

Keep this calendar beside your hive notes and mark the next decision that needs attention. For a printable seasonal planner and our full library of local guides, visit the Garden Toolkit, and join our email list for Santa Cruz County gardening and beekeeping reminders.