A shift from the La Nina to El Nino weather pattern is expected to bring warmer temperatures and little rainfall to California’s Central Valley for most of 2026, according to a May 1 announcement. Weather forecasters say that this change may mean the region has already received all its rain for the current season, with recorded rainfall at 9.56 inches compared to an average annual total of 11.01 inches.
The early onset of warm weather has led to an accelerated spring, causing nearly all types of spring flowers to bloom within a short period and resulting in shorter flower lifespans due to unnatural heat. Cool-season vegetables such as leafy greens have bolted, root crops like radishes and beets have become deformed and bitter, while peas and sweet peas have withered on the vine. Pollinators such as bees remain active, but the shortened bloom period may impact pollination rates for citrus and other fruit trees.
Gardeners are advised that late March and early April is typically ideal for planting summer annuals and vegetables from seed or transplanting seedlings outdoors. However, due to higher than normal spring temperatures, experts recommend a gradual ‘hardening off’ process before moving young transplants outside. Without this transition period, tender plants risk scorched leaves or stunted growth when exposed directly to high temperatures above 80 degrees Fahrenheit.
Transplants purchased from garden centers may already be stressed by sun exposure if sold in small cell packs that dry out quickly. Replanting these into larger pots before hardening off can help reduce transplant shock during acclimatization. It is also suggested that gardeners choose drought-tolerant varieties labeled as heat resistant with longer days until maturity for better productivity throughout the hot season.
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