June in the Western States: Adenium Seed Germination Timing

Western (TX, AZ, NV, CA, NM, OK)

This region splits into two very different germination environments depending on where you are.

Houston and the humid Gulf-adjacent stretch of Texas are getting a wet start to the week — 60–70% rain chances through Sunday — before turning hard dry by Tuesday, with highs in the low-to-mid 90s and rain chances dropping to 5–20% for the rest of the week. That's a good pattern: a brief wet window to start trays under cover, then a long dry, hot stretch that's ideal for finishing germination once seedlings emerge. Watch your watering frequency closely once the humidity drops — media that worked fine Sunday will dry out much faster by Wednesday.

High desert growers — Santa Fe and similar conditions across northern New Mexico, parts of Arizona, and eastern California — are dealing with the opposite problem. Santa Fe is showing 0% rain chances most days this week and a 30-plus degree daily swing between 87–92°F afternoons and 56–61°F nights. Dry air pulls moisture out of germination media fast, and that swing stresses tender, just-emerged seedlings. Run a humidity dome and check media moisture twice a day instead of once, and keep trays out of direct afternoon sun even though the ambient temperature looks ideal on paper. Growers in this subgroup have the longest dry-heat growing season in the country once seedlings establish — worth starting more seed than you think you need.