I bought these two Hoyas last week and noticed that the obovata top two leaves are curling. Is this normal? Should I water?

Hoyas leaves starting to look dull or curling up, can be from lack of water. Not sure where you are but if it's in a hotter or drier part of the country you may need to water more than what is recommended for most. But... gotta be careful of root rot.

I usually like to do the "side-watering" method with Hoyas. You won't really find that term anywhere. It's just what I call watering on one side of the pot, then waiting half an hour for capillary action to spread the water throughout the soil. It may mean you have to water more frequently, but you're less likely to get root rot.

Every ones soil and conditions are different. Two people using the same brand of soil in different parts of the country can be watering at totally different intervals because of differences in light, temperature and humidity. You just have to watch your conditions.

Another thing people don't talk about much is that most Hoyas are coming from Southeast Asia, where it is extremely humid. Hoyas do love humidity. They don't love soggy soil, but humidity is not soggy soil. If you have ever tried the "bag-a-Hoya" method with cuttings, where you soak perlite in water, drain it, and then put it and your cuttings in an air-filled ziplock bag, you might have been surprised that the cuttings seem to thrive even though they are not touching water or soil or anything. This was the only way I was able to get my 'Krimson Princess' to root after like 8 weeks...

Of course, then you have to watch out for mold...

Obovata also tends to vary depending on the conditions. (Pictures below) I got a very old obovata plant that had thick leaves that literally looked like they were made out of lime green wax or carved out of some kind of lemon/lime marble or something. I was in love but was a little disappointed to find that the new leaves that grew out were a dark forest-green, were thin and curled in a bit. I did love that they were huge, but they looked more like the obovata leaves I would normally see on most plants.

After asking the grower, I found out that this plant was originally under extremely high light for a Hoya. Probably closer to 80-90% of full-sun, if not totally full-sun, which means higher carbohydrate production, and the chlorophyll fading out a bit which is where the lighter green comes from. I was keeping mine under probably 30% of full sun at the brightest so naturally the plant started producing different kinds of leaves. They must have graduated up to this light level though because putting Hoya right in bright light can burn the leaves.

But based on your picture it really looks like yours just needs a little more water. I would try the gradual watering on one side. "The bend method" might help too, where you try bending the leaves to see if the plant needs water. If it's rigid and you can't bend it, it doesn't necessarily need water. But if it's bendy or rubbery... it probably needs some water, or at least more moisture.

But wait, did you have them shipped? If you did, they might just be experiencing a bit of shock. If they were shipped, I would feel the soil and see if it's moist at all. If it is, and it's still bendy, it might be shock and you should leave it alone. Maybe move it to a warmer more humid area. Maybe near a window in a bathroom or in a frequent-used kitchen with a fluorescent light?

Interesting! I am happy to hear of someone else using the "side method". That's how I water my larger ZZ plants and teaching that method to my mom helped with her "heavy-handed" watering problem.

Thank you very much for all the info. I did get them shipped. I will definitely try the side method. Never heard of this. I did water some and the leaves got firmer. :)