What is commonly called geranium AKA Pelargonium will be perennial in zone 10 and there are light pink varieties. Perennial Geraniums (a different type of plant from Pelargoniums) come in a range of colors but Geranium sanguineum var. striatum is pale pink. I don’t know if it is happy in zone 10. If you have room for a camellia, there are camellias with baby pink flowers. I saw both Camellia and Pelargoniums blooming in San Jose this winter. Check out salvias. There are tons of varieties, many of which are drought tolerant, and I imagine that some will be both pink and well suited to your area. Do Veronicas grow where you are? If so there are a bunch of pale pink selections. There are pink cultivars of clematis, but I have no experience growing them in zone 10 and I wouldn’t consider them drought tolerant.

The geraniums look lovely! Local camellias I haven't seen in light pink but their flower shape is relaxing! For balloon flowers I believe they are zone 9, so I think they'd melt unfortunately! Other beautiful light pink flowers I would love to grow but zone wise can't are peonies and bellflowers, I was also looking at pink primrose but was worried they'd overseed. Also pentas look pleasing as well~

Salvia x jamensis will thrive in your climate and is drought tolerant and has a number of pale pink cultivars: 'California Sunset', 'Sierra de San Antonio', 'La Tarde', 'Senorita Leah', 'Shell Dancer'. Ditto Salvia greggii.

Dianthus is also an option with many pale/light pink or even peach/coral selections. Also moderately drought tolerant once established.

And not an annual or perennial but rather an evergreen shrub, Abelia x grandiflora has very pale pink flowers sporadically all summer long. Lots of very compact selections available and some with variegated foliage as well. And beloved by hummingbirds.

All of these are considered climate-appropriate for you according to the Sunset Western Garden Book.

There are various types of Gaura lindheimeri that are light pink, some with pink and white. Nice foliage and texture mixed with other plants, hardy and drought-tolerant, butterflies love them. I’ve grown them for decades, one of my fav perennials.

There are pink cultivars of both Cistus (eg Grayswood Pink) and Helianthemum (eg Wisley Pink) which are tough, sun loving and drought tolerant. The Helianthemum also has silver foliage.

Thanks everyone for the suggestions! The only one that seems to be in the right color locally is the geranium, which got burned during the heat wave aww. I did buy a pentas and surprisingly a lisianthus at a nearby nursery. The rest I may pull the trigger to buy the rest online! Also may get a pink brugmansia with its big flowers, looks wonderful!

Vinca (Catharanthus rosea) comes in various shades of pink.

Aquilegia caerulea - Rose Queen, Armeria maritma - Pt. Arena, Sea Thrift, Clerodendron bungei,

Achillea millefolium 'Cameo' "Yarrow"

Asclepias speciosa Showy Milkweed"

Aster novae-angliae
'Harrington's Pink'

Ceanothus x pallidus 'Marie Simon'

Cosmos bipinnatus
'Prom Dress'

Dahlia imperialis "Bell Tree Dahlia"

Darmera peltata
"Umbrella Plant"

Dierama
'Spring Dancer'

Dipogon lignosus

"Cape Sweet Pea

Eriogonum parvifolium

"Buckwheat"

Allium schubertii

IncarvilleaArguta "Himalayan Gloxinia

Jasminum polyanthum

'Pepita'

Hi there, also a fellow 10b gardener here and have done EXTENSIVE planning and research on what to grow in our zone. Follow me on Instagram @newportfarmstead if you want to see pictures of many of the items below blooming in my garden this year.

Sounds like you should research more heirloom variety colors. Standard seedlings from nurseries and the run of the mill seeds from the stores aren't going to cater to this specific color palette. Look for heirloom variety and take your search online for a wider variety and better color match. Floret Flower is best for seeds and bulbs, Johnny's Selected Seeds, Jackson and Perkins, David Austin Roses, Digging Dog Nursery online, White Flower Farm, and Longfield Gardens.

BEST BULBS or TUBERS

Dahlia's

• I like the light pink with a hint of mauve or almost a Cafe color.
• Dahlia Shiloh Noelle, Dahlia Cafe Au Lait are big tall varieties with dinnerplate 8'' flowers to add interest to the back of your garden.
• Maya is light blush and apricot that is really pretty a bit shorter.
• Since we live in 10b you don't have to fuss with digging up the tubers every year. Much lower maintenance.

Ranunculus

• Though you usually put these in the ground in Fall in our zone, you can still get some in the ground if you act fast.
• https://shop.floretflowers.com/products/ranunculus-pink-picotee

BEST CUT FLOWERS (ok so really the entire list makes a good cut flower)

Cosmos Rosetta

• really good for beginners and you literally just throw down seed then get lots of beautiful cut flowers on a good sized bush. Tons of color options.
• https://shop.floretflowers.com/collections/seeds-in-stock/products/cosmos-rosetta

Lace

• I'm growing Bishop's Lace and Lace Orlaya. You can find it in pink. This is an excellent cut flower and filler for bouquets. Might as well bring the pink love indoors right?
• https://shop.floretflowers.com/collections/seeds-in-stock/products/lace-flower-lacey-pink

Phlox

• Personally I'm growing more Cafe colors and the Cherry centered one but Blushing Bride is really gorgeous
• https://shop.floretflowers.com/collections/seeds-in-stock/products/phlox-blushing-bride

Pincushion aka Scabiosa

• https://shop.floretflowers.com/collections/seeds-in-stock/products/pincushion-flower-salmon-queen

BEST CLIMBERS

Roses

• Spice it up with a climbing rose.
• Climbing Eden is white with soft pink edging, very profuse and excellent bloomer in our zone.
• David Austin Roses are going to definitely come in varieties of this color and be your best bet if you like Peonies with some having scalloped or ruffled edges.

Clematis

• Check out Belle of Woking (climber, requires a trellis)

Sweet Pea - oh so many choices but for your palette probably Mollie Rilstone

• https://shop.floretflowers.com/collections/seeds-in-stock/products/sweet-pea-mollie-rilstone
• These are climbers and will require a trellis for them to climb but again nice to have some tall options to create your layers of pink. Great cut flowers. A little more work as they need a lot of fertilizer to grow.

Bougainvillea

• Not one I am growing but it is prolific in my area.
• Ada's joy is more of that soft pink and less of the hot pink magenta you more commonly see
• https://www.thegardener.co.za/bougainvillea-ada-s-joy/ 

BEST SHADE

Japanese Anemone

• They sell these in nurseries around me. I have pink ones and white ones. Easy to grow and good for the part shade area where you have less flower options.

Foxglove

• Growing some pretty pink ones.

BEST FALL BLOOMERS

China Asters -

• I'm growing Valkyrie Pink - https://shop.floretflowers.com/collections/seeds-in-stock/products/china-aster-valkyrie-pink
• Rose Quarts or even the Apricot tinged with pink - https://shop.floretflowers.com/collections/seeds-in-stock/products/china-aster-rose-quartz-mix 

BEST TO ADD INTEREST

Larkspur

• https://shop.floretflowers.com/collections/seeds-in-stock/products/larkspur-splish-splash

Russel Lupine

• To give the soft pinks edge, might be nice to have this spiky one to mix it up
• Throw down seed, so easy

Hope you enjoy and that this information helps other Zone 10 gardeners and pink lovers out there!

Azusa, I’m a fellow pink lover in zone 10a, North San Diego County, CA. I agree with Danielle; she has given you some wonderful suggestions. I’m going to use her list for some that I don’t currently grow. Thanks SO much, Danielle!

I would also suggest the CA poppies in pink shades, and Lavatera trimestris “Pink Blush”. The sweet pea ‘Anniversary’ is also a very pale pink. Lots of Dianthus and some Scabiosa are light pink. They both also do very well here. I’ll come back and add more suggestions as I think of them.

Danielle, I purchased China Aster seeds from Floret and Johnny’s recently. I’ve never grown them before. Do you have any suggestions as to when and how I should start them? ANY tips would be very appreciated! Thanks, Lisa

I love pinks so here are a couple. First off, easy annuals - gypsophila, a perfectly delicious, incarvillea sinensis 'Cheron Pink' and the little linmanthes roseum. Then, hardy for you (but not for me) is the Australian native chamelaucium, aka Geralton wax plant and finally, the small shrub, azorina vidallii...plus some of the African geraniums (g.incanum, Silver Cloak...or the Canary Islanders including a seed strain of g.maderense, supposedly white but actually, palest pink ...not to mention some very interesting pelargoniums. Also, some pale pink alstroemerias and, if you like, pale pink zantedeschias - z.rehmannii.

There are some cultivars of Lavendula/lavender that have light pink flowers. One I have run across recently is Ellagance Pink, but I am fairly sure that I have seen others.

I’ve found a photo of my blush pink Lavatera trimestris. It’s a very pale pink, self sows, and does great in our climate.

Scabiosa ‘Florist Pink’ turns all different shades of pink. I pick them when they’re the shade I need for a bouquet.

Lots of roses come in pale pink.

Pale pink yarrow below the rose.

Lisianthus comes in pale pink, and bloomed all summer here. Lisa

I have gotten a pale pink lisianthus that was gorgeous but did not live too long.

I finally got my hands on a Queen of Sweden own root so I am excited to see its beautiful cups! I also have a Sceptre d Isle from last year but it is still establishing roots. I did get a couple baby blooms though.

I still have a Ellagance Pink lavender and it is a very lovely pale pink as well. My stocks are a creamy pink and still in bloom, I hope they survive! I have 2 camellia, a Pearl Maxwell and a Nuccio's Pearl but they too are taking their time to grow so no flowers yet. The scabiosa have a nice texture, I might try to grow those! And I am trying to grow pale pink ranunculus but all I've gotten so far is foliage! Thank you everyone for the sweet contributions!

I don’t have blooms on my ranunculus either Azusa, just foliage. Looking back on my records, my ranunculus start blooming in late March or early April every year. I live about 12 miles from the famous “Carlsbad Flower Fields”. They grow thousands of ranunculus, and sell the cut flowers and corms, seasonally. The fields are open from March 1 -May 12. Their ranunculus bloom a little earlier in Carlsbad, (slightly warmer nights by the coast) and bloom longer, (cooler Spring days, than at my place, 12 miles inland.) Your ranunculus sound like they’re right on schedule.

I’m trying to overwinter my lisianthus this year. I didn’t realize they were actually tender perennials, until this year. The foliage looked very ratty by November, and I recently cut them back to a healthy looking rosette of foliage. Mine get a bit of afternoon shade, and I made sure to amend the little planting holes with perlite and compost. My soil is heavy clay, and I suspect they’d rot without the extra drainage. I really would like to grow some of the really unusual colors available at Johnny’s Seed, but I hear they’re difficult from seed. Stocks are great winter bloomers for us. Isn’t the scent wonderful? I purchased some very pale pink stock seed, from Floret, but I haven’t seen a thing from them. I did save at least half of them, so I’ll try again in the Fall.

You picked out some lovely roses! We pale pink lovers don’t lack for choice when it comes to roses, that’s for sure. I’ve never grown Scepter’d Isle, but it’s gorgeous in pictures. My Queen of Sweden wasn’t very happy planted in the hottest, sun-scorched spot I could have possibly given it. It’s no surprise she didn’t perform very well for me. I’ve learned that very few David Austin roses are truly happy in full, blazing sun in MY yard. In my yard the true exception to this has been ‘Evelyn’. Everyone’s got a different microclimate, though. Those growing the exact same rose, in the same zone, can get drastically different results.

I need to look up that pink lavender! I didn’t realize there was a pale pink one available. I’ll be looking up your camellias, as well. I’m currently growing one, and it finally has a few buds on it. I can’t remember if it’s a pale pink, or a darker pink. That’s another thing I need to look up. Every year I vow to be more organized in my garden journal. I’m finding it SO helpful to look back on. The problem is remembering to write it down in the first place.

There are some gorgeous breadseed poppies out there. Unfortunately, I don’t have any pale pink ones. They do great here if you throw the seed around in mid November. Lisa

Podranea ricasoliana , Pink trumpet vine is a head turner when it starts blooming. Pink coralline and Rangoon creeper are good too. Mandeville comes in Pink.

Some more light pink flower I have/had:

Kalanchoe blossfeldiana

Cornflower

Begonia cherry blossom

Grevillea Peaches and Cream

Sedum Crystal Pink

Mom's rain lilies

Last year's medium pink ranunculus

Medium pink double Impatiens

Aiming for a light pink garden!

All so pretty! I hope my Ranunculus aren’t drowning in this crazy rain. We sure need it, though. Lisa

These are photos taken in San Jose12/25/2018 that I referenced up thread plus one more with an unknown ID. The Pelargonium in the first photo is darker than you want but there are other types that flower baby pink that I would expect you to be able to find.

Unknown

Camellia

Your unknown is Raphiolepis indica.