Arbor Day 2024 Theme Park. Due to our changing climate, portland’s hot dry summers have made it more difficult for trees planted in april to succeed. National arbor day is always celebrated on the last friday in april, but many states observe arbor day on different dates throughout the year based on best.
The governor of the cnmi traditionally conducts a proclamation of arbor day on. National arbor day is always celebrated on the last friday in april, but many states observe arbor day on different dates throughout the year based on best.