A Planting Calendar for Uganda’s Two Rainy Seasons

Two seasons, and where they are not two

Most of Uganda has a bimodal rainfall pattern: two rainy seasons a year, with dry spells between them. The north is different — one long season, and planning built for the south fails there.

Getting the windows right matters more than almost any other decision, because a crop planted two weeks late in a short season is a crop that finishes in the dry.

1. The pattern, region by region

• Central and south — first rains from around March to May, second rains from around September to November. Two full cropping seasons
• West and south-west — similar timing, with the second season often more reliable than the first, and higher rainfall overall
• East — first rains from around March, second from August, with the eastern highlands wetter and longer than the plains
• North — one long season, roughly April to October, with a single main crop and a long dry period after

Within a region, altitude changes everything. A highland location can be weeks behind a nearby lowland one, and the local answer is always better than the regional one.

2. Plant on the rain, not on the date

A calendar is a planning tool, not an instruction. The rule that actually works:

• Wait for the rains to be established — two or three good rains in a week, not one storm
• Plant within the first two weeks of establishment, and preferably the first
• Land preparation happens before the rains, so that planting can happen immediately when they arrive
• If you are more than three weeks late, switch to a shorter-maturing variety rather than planting the original one late

The most common and costly mistake is preparing land after the rains start, which puts planting three weeks behind and pushes maturity into the dry spell.

3. Matching crop to window

Work backwards from how long the crop needs to how much season is left.

• Beans — around 65 to 90 days. Fits either season comfortably, and fits a short second season
• Maize, short-maturing — around 90 to 110 days. Safe in both seasons in most regions
• Maize, long-maturing — 120 days and up. First season or the northern long season only
• Groundnuts — around 90 to 120 days depending on variety
• Sorghum and millet — drought-tolerant, and the right choice where rain is marginal
• Cassava and sweet potato — long-cycle and forgiving; plant into the first rains
• Vegetables — short cycle, plant any time you have water, which is where irrigation pays

Note: Buy the variety for the season, not the variety you have seed for. A long-maturing maize planted into a short second season is a crop that will be flowering when the rain stops, and flowering is the stage where drought does the most damage.

4. A working year for a bimodal region

January to February — dry. Prepare land, repair stores, buy inputs while prices are low, plant nothing rain-fed.

March to May — first rains. Plant immediately on establishment. Weed at two and five weeks; these two weedings decide the yield.

June to July — dry spell. Harvest, dry properly, store. Prepare land for the second season now.

August to September — second rains begin, earlier in the east. Plant short-maturing varieties.

October to November — second harvest. Dry and store.

December — dry. Sell in tranches; prices are rising away from harvest.

5. Planning around a shifting season

Season onsets have become less predictable, and planning has to absorb that rather than ignore it.

• Stagger planting across two or three weeks rather than committing everything to one date
• Split varieties — some short-maturing, some longer — so a bad season does not take the whole crop
• Prepare early so that a late onset does not become a late planting
• Follow the district forecast rather than a national one, and treat both as a probability
• Mulch and conserve — the difference between a crop that survives a dry spell and one that does not is usually soil moisture

What to do this month

Look up which pattern your district follows, pick varieties whose maturity fits the shorter of your two windows, and prepare land before the rains rather than after. Those three decisions cover most of what a calendar can do for you.