Absolutely, happy to share my experience! I've had Grevillea 'Coastal Gem' in my garden, and it's a wonderful plant, especially if you're in a coastal area. It’s very tolerant of salt spray and wind, which is quite beneficial if you're near the ocean. For soil, it prefers well-draining options. I've found that sandy or rocky soils work well, reminiscent of its natural Australian habitat.
Once it's established, it becomes quite drought-tolerant, so you don't need to water it too often. During the first year, I recommend regular watering to help it establish a good root system. After that, occasional watering should suffice unless you're in an exceptionally dry area.
Pruning is fairly straightforward—Grevillea 'Coastal Gem' doesn't require much. I usually do a light trim after the flowering season to maintain its shape and encourage more blooms in the future. Just be mindful of its dense and sprawling growth habit when planning your garden layout.
One more thing to keep in mind is that these plants, and Grevilleas in general, may be sensitive to phosphorus, so use a fertilizer that's low in phosphorus or ideally formulated for natives if you choose to fertilize.
Have you considered companion planting with other coastal-tolerant species? This could enhance your garden's resilience and aesthetic appeal.
