i saw in the lexica that there are daybloom/nightshade prime's
so i messed around a bit and in the end used the entitydata command to change the subtilename of a daybloom to that it became a prime version
but when i placed it i crashed

here is the report
hope it helps!
---- Minecraft Crash Report ----

WARNING: coremods are present:
LoadingPlugin (RandomThings-MC1.8.9-3.6.4.jar)
ThaumcraftLoader (Thaumcraft-1.8.9-5.1.6.jar)
Contact their authors BEFORE contacting forge

// I blame Dinnerbone.

Time: 26-2-16 18:09
Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
at vazkii.botania.common.block.subtile.generating.SubTileDaybloom.writeToPacketNBT(SubTileDaybloom.java:76)
at vazkii.botania.api.subtile.SubTileEntity.writeToPacketNBTInternal(SubTileEntity.java:64)
at vazkii.botania.common.block.tile.TileSpecialFlower.writeCustomNBT(TileSpecialFlower.java:116)
at vazkii.botania.common.block.tile.TileMod.func_145844_m(TileMod.java:56)
at net.minecraft.server.management.PlayerManager$PlayerInstance.func_151252_a(PlayerManager.java:571)
at net.minecraft.server.management.PlayerManager$PlayerInstance.func_73254_a(PlayerManager.java:518)
at net.minecraft.server.management.PlayerManager.func_72693_b(PlayerManager.java:64)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:223)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:690)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:152)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481)
at java.lang.Thread.run(Thread.java:745)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Stacktrace:
at vazkii.botania.common.block.subtile.generating.SubTileDaybloom.writeToPacketNBT(SubTileDaybloom.java:76)
at vazkii.botania.api.subtile.SubTileEntity.writeToPacketNBTInternal(SubTileEntity.java:64)
at vazkii.botania.common.block.tile.TileSpecialFlower.writeCustomNBT(TileSpecialFlower.java:116)
at vazkii.botania.common.block.tile.TileMod.func_145844_m(TileMod.java:56)
at net.minecraft.server.management.PlayerManager$PlayerInstance.func_151252_a(PlayerManager.java:571)
at net.minecraft.server.management.PlayerManager$PlayerInstance.func_73254_a(PlayerManager.java:518)
at net.minecraft.server.management.PlayerManager.func_72693_b(PlayerManager.java:64)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:223)

-- Affected level --
Details:
Level name: Thaumcraft 5!
All players: 1 total; [EntityPlayerMP['reinder'/1256, l='Thaumcraft 5!', x=212,70, y=64,00, z=-130,82]]
Chunk stats: ServerChunkCache: 707 Drop: 0
Level seed: 1740350617803193004
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: 228,00,64,00,148,00 - World: (228,64,148), Chunk: (at 4,4,4 in 14,9; contains blocks 224,0,144 to 239,255,159), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 7614239 game time, 6000 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:690)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:152)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.8.9
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 552813168 bytes (527 MB) / 1886773248 bytes (1799 MB) up to 4281597952 bytes (4083 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 15, tallocated: 95
FML: MCP 9.19 Powered by Forge 11.15.1.1761 29 mods loaded, 29 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.19} Minecraft Coder Pack
UCHIJAAAA FML{8.0.99.99} Forge Mod Loader
UCHIJAAAA Forge{11.15.1.1761} Minecraft Forge
UCHIJAAAA Waila{1.6.0} Waila
UCHIJAAAA Baubles{1.1.3.0} Baubles
UCHIJAAAA intangible{0.0.23} Intangible
UCHIJAAAA JEI{2.28.1.162} Just Enough Items
UCHIJAAAA BloodMagic{1.8.9-2.0.0-18} Blood Magic: Alchemical Wizardry
UCHIJAAAA Thaumcraft{5.1.6} Thaumcraft
UCHIJAAAA Botania{r1.8-249} Botania
UCHIJAAAA BuildCraft|Core{7.2.0-pre12} BuildCraft
UCHIJAAAA BuildCraft|Transport{7.2.0-pre12} BC Transport
UCHIJAAAA BuildCraft|Energy{7.2.0-pre12} BC Energy
UCHIJAAAA BuildCraft|Factory{7.2.0-pre12} BC Factory
UCHIJAAAA BuildCraft|Silicon{7.2.0-pre12} BC Silicon
UCHIJAAAA BuildCraft|Robotics{7.2.0-pre12} BC Robotics
UCHIJAAAA BuildCraft|Builders{7.2.0-pre12} BC Builders
UCHIJAAAA chiselsandbits{mc1.8.9-v1.8.11} Chisels & Bits
UCHIJAAAA ComputerCraft{1.78} ComputerCraft
UCHIJAAAA flatcoloredblocks{mc1.8.9-v1.7} Flat Colored Blocks
UCHIJAAAA IronChest{6.0.125.770} Iron Chest
UCHIJAAAA JEIAddons{0.12.0.57} Just Enough Items Addons
UCHIJAAAA jeresources{0.3.4} Just Enough Resources
UCHIJAAAA mantle{1.8.9-0.8.2.jenkins95} Mantle
UCHIJAAAA testdummy{1.0} MmmMmmMmmMmm
UCHIJAAAA Psi{beta-18} Psi
UCHIJAAAA RandomThings{3.6.4} Random Things
UCHIJAAAA tconstruct{1.8.9-2.1.0.jenkins101} Tinkers' Construct
UCHIJAAAA worldedit{6.1.1} WorldEdit
Loaded coremods (and transformers):
LoadingPlugin (RandomThings-MC1.8.9-3.6.4.jar)
lumien.randomthings.asm.ClassTransformer
ThaumcraftLoader (Thaumcraft-1.8.9-5.1.6.jar)

GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Pulsar/tconstruct loaded Pulses: 
    - TinkerCommons (Enabled/Forced)
    - TinkerWorld (Enabled/Not Forced)
    - TinkerTools (Enabled/Not Forced)
    - TinkerSmeltery (Enabled/Not Forced)
    - TinkerGadgets (Enabled/Not Forced)
    - TinkerOredict (Enabled/Forced)
    - TinkerIntegration (Enabled/Forced)
    - TinkerFluids (Enabled/Forced)
    - TinkerMaterials (Enabled/Forced)
    - chiselsandbitsIntegration (Enabled/Not Forced)
    - TinkerDebug (Enabled/Not Forced)

Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['reinder'/1256, l='Thaumcraft 5!', x=212,70, y=64,00, z=-130,82]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

ye thats what happens when you randomly change things, the flower being a prime isn't just that its called prime, it has other stuff in the background that you just messed up on it.

Yeah they're not meant to be obtained. I'll see if this is an actual bug though

this might be due to using /blockdata. That can mess up unprepared tileentities.

yeah this is because you didn't set all the tags the primus needs to work properly, so it crashes (namely, the primePositionX/Y/Z tags). this is a non-issue.